Signature Packages
Spring Airsoft Guns
Gas Airsoft Guns
Electric Airsoft Rifles AEG
Airsoft Gas, Batteries, & Chargers
Airsoft BB & Targets
Airsoft Grenades, Launchers, Land Mines
Airsoft Gun Magazines
Apparel & Tactical Gear
Rifle Bags, Gun Cases, BackPacks, & Bags
Laser, Light, Scope, & Scope Mounts
Airsoft Upgrades
Paintball Guns & Accessory
Pellet Gun, Air gun, & Air Gun Accessory
Pre-Owned & Scrap Yard Airsoft Items Gun
Zombie & Halloween AirSoft Decorations

Newly Arrived

Airsoft Morale Bat Man Logo PVC Patch

$4.99 ADD TO CART

Trinity Force 4x22 Carry Handle P4 Scope

$37.99 ADD TO CART

FN Herstal SPR A5M Spring Airsoft Rifle

$89.99 ADD TO CART
 

Gear Box, Mech Box, Full Tune Up Kit

Full line of Airsoft AEG Complete, Shell, & Partial Gear Boxes as well as Full Tune Up Kits (FTK). For an easy upgrade drop in gear box or replacing a broken gear box.
Mecha Boxes by Systema, Deep Fire, and ICS. We also offer FREE* tune up & upgrade service for most Airsoft guns. Or visit our Airsoft University for more information, videos, and tutorials on how to upgrade and modify airsoft guns.

APS V2 Hybrid Gearbox Dynamic Trigger

Item Code: AC-APS-V2TRIGER
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: APS Airsoft
Manufacturer Part No: AER029
Stock: Yes & Ships w/in 24Hrs*
 
APS V2 Hybrid Gearbox Dynamic Trigger
- Light Weight Skeletal Design
- Designed For M4/M16 AEGs
- As seen in the APS UAR AEGs
APS V2 Hybrid Gearbox Dynamic Trigger
Price:$9.99  per EACH
QTY:   Add to cart Add to Wish List
 

Elite Force M4/M16 First Aid Repair Kit

Item Code: AC-EF-KIT-79054
UPC Code: 723364790546
Airsoft Gun Style: Maintenance & Accesories for Airsoft
Manufacturer: Elite Force Airsoft
Manufacturer Part No: 2279054
Stock: Yes & Ships w/in 24Hrs*
 
Elite Force M4/M16 First Aid Repair Kit
Never be caught unprepared! With the Elite Force M4/M16 First Aid Kit, you can have tools at the ready for any issue that may arise in your AEG.
Elite Force M4/M16 First Aid Repair Kit
Price: $124.99 per EACH
SALE: $99.99 per EACH
QTY:   Add to cart Add to Wish List
 

*Build-A-Rig Super Low Pressure Air Rig

Item Code: AC-PS-V899001
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Valken Tactical
Manufacturer Part No: V899001
Stock: Yes & Ships w/in 24Hrs*
 
*Build-A-Rig AA Super Low Pressure Air Rig
This air rig is a SLP (Super Low Pressure) Air Rig. This system incorporates a robust single regulator that allows you to adjust your PSI with the ease of twisting a knob or you can lock it out with slight modification to the regulator knob.

Please note, this air rig can NOT use any HPA tank that outputs higher than 300 PSI! SLP tanks are required!

*Build-A-Rig Super Low Pressure Air Rig
Price:$84.99  per EACH
QTY:   Add to cart Add to Wish List
 

King Arms Silver Wire Set Rear Version 2

Item Code: AC-UP-KA-BAT-33
Airsoft Gun Style: M4 M16 Airsoft Gun Internal Upgrades
Manufacturer: King Arms Airsoft
Manufacturer Part No: KA-BAT-33
Stock: Yes & Ships w/in 24Hrs*
 
King Arms Silver Wire Set For Rear Wired Version 2 Gearbox
Silver Wire sets offer lower resistance and higher heat tolerance for high performance AEGs. When upgrading your battery and motor, upgrading the wiring set is a must as well.
Compatible with standard Version 2 AEG Gearboxes. M4, M16, MP5, G3 Models.
King Arms Silver Wire Set Rear Version 2
Price:$22.99  per EACH
QTY:   Add to cart Add to Wish List
 

*Modify S100 Tune Up Kit for AK-47/47S

Item Code: AC-UP-MD-TK-SAK
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: MOD FTK S AK
Stock: Ships in 1 Week
 
Modify Full Tune Up Speed Kit For AK
Features:
- Ported Piston Head
- Double O-ring Cylinder Head
- Smooth Bore Cylinde
- Reinforced Piston
- Air Nozzle
- S100 Spring
- Ball Bearing Spring Guide
- Metal Bushings
- Anti-reverse Latch
- Tappet Plate
- Synthetic Lubricant
- MOD FTK S AK
*Modify S100 Tune Up Kit for AK-47/47S
Price:$105.00  per EACH
QTY:   Add to cart Add to Wish List
 

Swiss Arms Programmable Burst Mosfet V2

Item Code: AC-UP-SA-603364
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: BOL Battery Chargers
Stock: Yes & Ships w/in 24Hrs*
 
Swiss Arms Programmable Burst Mosfet V2
Features:
- Progammable 2-12 Shots and Burst Fire
- 7.4 and 11.1 lipo Compatible
- 8.4 and 9.6 Nimh/Nicad Compatible
- 4 Settings for Optimal Performance at Any Voltage

Swiss Arms Programmable Burst Mosfet V2
Price:$21.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire Version 3 Gearbox Switch Set

Item Code: AC-UPE-DF-CP059
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Deep Fire Upgrade Parts
Manufacturer Part No: DF-CP059
Stock: Yes & Ships w/in 24Hrs*
 
Deep Fire Version 3 Gearbox Switch Set
This is the internal Selector Switch Set for the Version 3 Gearbox. This set features DEANS connection out of the box and can resist up to 350 Degrees C. An important upgrade part for players who love using lipo batteries and semi auto games.
Deep Fire Version 3 Gearbox Switch Set
Price:$11.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire Version 3 G36 Switch Set

Item Code: AC-UPE-DF-CP060
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Deep Fire Upgrade Parts
Manufacturer Part No: DF-CP060
Stock: Yes & Ships w/in 24Hrs*
 
DeepFire V.3 G36 Switch Set
This is the internal Selector Switch Set for the Version 3 G36 Gearbox. This set features DEANS connection out of the box and can resist up to 350 Degrees C. An important upgrade part for players who love using lipo batteries and semi auto games.
Deep Fire Version 3 G36 Switch Set
Price:$11.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire M4 Switch Set V2 Wiring Set

Item Code: AC-UPE-DF-CP061
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Deep Fire Upgrade Parts
Manufacturer Part No: DF-CP061
Stock: Yes & Ships w/in 24Hrs*
 
Deep Fire M4 Switch Set V2 Wiring Set
This is the internal Selector Switch Set for the Version 2 M4 Gearbox. This set features DEANS connection out of the box and can resist up to 350 Degrees C. An important upgrade part for players who love using lipo batteries and semi auto games.
Deep Fire M4 Switch Set V2 Wiring Set
Price:$11.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire M16 G3 MP5 Switch Set

Item Code: AC-UPE-DF-CP062
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Deep Fire Upgrade Parts
Manufacturer Part No: DF-CP062
Stock: Yes & Ships w/in 24Hrs*
 
DeepFire M16 G3 MP5 Switch Set
This is the internal Selector Switch Set for the M16, G3, or MP5 Gearbox. This set features DEANS connection out of the box and can resist up to 350 Degrees C. An important upgrade part for players who love using lipo batteries and semi auto games.
Deep Fire M16 G3 MP5 Switch Set
Price:$11.99  per EACH
QTY:   Add to cart Add to Wish List
 

APS Wiring Harness for AK47/74 AEG

Item Code: AC-UPI-AEK006
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: APS Airsoft
Manufacturer Part No: AEK006
Stock: Yes & Ships w/in 24Hrs*
 
APS Complete Wiring Harness for AK Series Airsoft AEG Rifles
- Inline Fuse Included
- Low Resistance Wiring
- Mini Tamiya Connector
- Trigger Switch Included
APS Wiring Harness for AK47/74 AEG
Price:$14.99  per EACH
QTY:   Add to cart Add to Wish List
 

APS Wiring Harness for AK / G36 AEG

Item Code: AC-UPI-AEK007
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: APS Airsoft
Manufacturer Part No: AEK007
Stock: Yes & Ships w/in 24Hrs*
 
APS Complete Wiring Harness for AK / G36 Series Airsoft AEG w/ V3 Gearbox
- Inline Fuse Included
- Low Resistance Wiring
- Mini Tamiya Connector
- Trigger Switch Included
APS Wiring Harness for AK / G36 AEG
Price:$14.99  per EACH
QTY:   Add to cart Add to Wish List
 

APS Wiring Harness for V2 Gearbox Front

Item Code: AC-UPI-AER006
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: APS Airsoft
Manufacturer Part No: AER006
Stock: Yes & Ships w/in 24Hrs*
 
APS Complete Wiring Harness for V2 Gearbox w/ Front Wired Battery
- Inline Fuse & Fuse Box Included
- Low Resistance Wiring
- Mini Tamiya Connector
- Suitable for V2 Gearbox AEG w/ Front Wired Battery Connection
APS Wiring Harness for V2 Gearbox Front
Price:$13.99  per EACH
QTY:   Add to cart Add to Wish List
 

APS Wiring Harness for V2 Gearbox Rear

Item Code: AC-UPI-AER007
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: APS Airsoft
Manufacturer Part No: AER007
Stock: Ships in 3 Weeks
 
APS Complete Wiring Harness for M4/M16 V2 Gearbox w/ Rear Wired Battery
- Inline Fuse & Fuse Box Included
- Low Resistance Wiring
- Mini Tamiya Connector
- Suitable for M4 or M16 variant V2 Gearbox AEG w/ Rear Wired Battery Connection
APS Wiring Harness for V2 Gearbox Rear
Price:$13.99  per EACH
QTY:   Add to cart Add to Wish List
 

APS Ver. 2 Hybrid 8mm Complete Gearbox

Item Code: AC-UPI-APS-2HF
Airsoft Gun Style: M4 M16 Airsoft Gun Internal Upgrades
Manufacturer: APS Airsoft
Manufacturer Part No: APS-2HF
Stock: Yes & Ships w/in 24Hrs*
 
APS Ver. 2 Hybrid 8mm Complete Gearbox
Features:
- 4 Lug Quick Change Spring Guide System
- 8mm Bearing Bushings, Bearing Piston Head and Bearing Spring Guide
- Polished and Buffed surface improves smoothness
- Fully Compatitible with Aftermarket Airsoft Guns using V2 Gear Box

APS Ver. 2 Hybrid 8mm Complete Gearbox
Price:$59.99  per EACH
QTY:   Add to cart Add to Wish List
 

APS ASR AEG M4 Airsoft Full Gear Box V2

Item Code: AC-UPI-APS-V2
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: APS Airsoft
Manufacturer Part No: APS-2HF
Stock: Yes & Ships w/in 24Hrs*
 
APS ASR AEG M4 Completed V2 Gear Box
Specifications:
- Full Gear Box at an Unbeatable Price! - Compatitible with most of the AEG guns in the world
- Made of Metal
- Completed Gear Box without Motor
- Electric Blow Back Gear Box
- Wire set included
APS ASR AEG M4 Airsoft Full  Gear Box V2
Price:$54.99  per EACH
QTY:   Add to cart Add to Wish List
 

AS Tactical V2 Quick Change Gearbox

Item Code: AC-UPI-AS-GB-01
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: AirSplat AS Custom Internal Upgrade Part
Stock: Yes & Ships w/in 24Hrs*
 
AS Tactical V2 Quick Change Gearbox
Features:
- Rear Wired
- Quick Change Spring System
- Complete Drop In Upgrade for any Version 2 AEG
- OEM for AirSplat by SHS
AS Tactical V2 Quick Change Gearbox
Price:$69.99  per EACH
QTY:   Add to cart Add to Wish List
 

AS Tactical CNC Aluminum V2 Gearbox

Item Code: AC-UPI-AS-GBS2
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: AirSplat AS Custom Internal Upgrade Part
Stock: Yes & Ships w/in 24Hrs*
 
AS Tactical CNC Aluminum V2 Gearbox
The AS Tactical CNC Aluminum V2 Gearbox Shell is a great platform to replace your stock gearbox, or build your own custom from the ground up. Made of CNC Aluminum, this Gearbox keeps the weight low, while maintaining excellent durability.
- OEM for AirSplat by SHS
AS Tactical CNC Aluminum V2 Gearbox
Price:$109.99  per EACH
QTY:   Add to cart Add to Wish List
 

AS Tactical CNC Aluminum V3 Gearbox

Item Code: AC-UPI-AS-GBS3
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: AirSplat AS Custom Internal Upgrade Part
Stock: Yes & Ships w/in 24Hrs*
 
AS Tactical CNC Aluminum V3 Gearbox
The AS Tactical CNC Aluminum V3 Gearbox Shell is a great platform to replace your stock gearbox, or build your own custom from the ground up. Made of CNC Aluminum, this Gearbox keeps the weight low, while maintaining excellent durability.
- OEM for AirSplat by SHS
AS Tactical CNC Aluminum V3 Gearbox
Price:$109.99  per EACH
QTY:   Add to cart Add to Wish List
 

Boyi Dboys M4 7mm Ver. 2 Upgrade Gearbox

Item Code: AC-UPI-BI-15-GB
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Boyi Dboys
Stock: Ships in 8 Weeks
 
Boyi Dboys M4 7mm Version 2 Upgrade Gearbox
- Complete with all upgraded Internals, such as 7mm bushings, M120 spring, reinforced set of metal gears, and premium grease lubrication. This gearbox is high performance and requires professional installation for optimum performance.
Boyi Dboys M4 7mm Ver. 2 Upgrade Gearbox
Price:$59.99  per EACH
QTY:   Add to cart Add to Wish List
 

BOL BURST Programmable AEG Mosfet

Item Code: AC-UPI-BOL-FET
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: BOL Battery Chargers
Stock: Yes & Ships w/in 24Hrs*
 
BOL BURST Programmable AEG Mosfet
Easily program your AEG to fire in Burst Mode with a simple trigger pull system.

BOL BURST Programmable AEG Mosfet
Price:$34.99  per EACH
QTY:   Add to cart Add to Wish List
 

*Bravo V3 Rear Wiring Harness Tamiya

Item Code: AC-UPI-BRV-AK-B
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Bravo Airsoft
Manufacturer Part No: BRAVO WH AK (REAR)
Stock: Ships in 1 Week
 
*Bravo V3 Rear Wiring Harness Tamiya
- 16awg low resistance silicon wiring
- Fits most V3 gearboxes
- Intended for experienced installation

Low Resistance Wiring Harness for AK47 Style AEG (wired to the rear)with small Tamiya Connector. It Comes with Trigger Spring and Switch Screw.
*Bravo V3 Rear Wiring Harness Tamiya
Price:$23.99  per EACH
QTY:   Add to cart Add to Wish List
 

*Bravo V3 Front Wiring Harness Tamiya

Item Code: AC-UPI-BRV-AK-F
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Bravo Airsoft
Manufacturer Part No: BRAVO WH AKS (FRONT)
Stock: Ships in 1 Week
 
*Bravo V3 Front Wiring Harness Tamiya
- 16awg low resistance silicon wiring
- Fits most V3 gearboxes
- Intended for experienced installation

Low Resistance Wiring Harness for AK47 Style AEG (wired to the rear)with small Tamiya Connector. It Comes with Trigger Spring and Switch Screw.
*Bravo V3 Front Wiring Harness Tamiya
Price:$23.99  per EACH
QTY:   Add to cart Add to Wish List
 

Burst Wizard King Kong Super 2 Mosfet T

Item Code: AC-UPI-BW-KK
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: RWA, KTW, Action Custom, & Misc.
Stock: Yes & Ships w/in 24Hrs*
 
Burst Wizard King Kong Super 2 Mosfet - Tamiya Version
With the New Burst Wizard King Kong ELITE Mosfet unit, you can customize your AEG on a whole new level. This Mosfet unit functions as a Plug&Play unit via TAMIYA Plug, or is capable of being hard wired in.
Easily program the Mosfet Unit with Trigger Commands:
- Multiple Burst Modes
- Determine and Adjust Rate Of Fire
- Full Auto Delay
- Magazine Change Delay
- Check Battery Voltage
Burst Wizard King Kong Super 2 Mosfet T
Price:$37.99  per EACH
Video Review - Click on gun to see airsoft gun review
QTY:   Add to cart Add to Wish List
 

Burst Wizard King Kong Super 2 Mosfet LG

Item Code: AC-UPI-BW-LT
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: RWA, KTW, Action Custom, & Misc.
Manufacturer Part No: BW-KK2-LG
Stock: Yes & Ships w/in 24Hrs*
 
Burst Wizard King Kong Super 2 Mosfet - Large Tamiya Version
With the New Burst Wizard King Kong ELITE Mosfet unit, you can customize your AEG on a whole new level. This Mosfet unit functions as a Plug&Play unit via TAMIYA Plug, or is capable of being hard wired in.
Easily program the Mosfet Unit with Trigger Commands:
- Multiple Burst Modes
- Determine and Adjust Rate Of Fire
- Full Auto Delay
- Magazine Change Delay
- Check Battery Voltage
Burst Wizard King Kong Super 2 Mosfet LG
Price:$37.99  per EACH
Video Review - Click on gun to see airsoft gun review
QTY:   Add to cart Add to Wish List
 

Burst Wizard King Kong Super 2 Mosfet D

Item Code: AC-UPI-BW-LV
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: RWA, KTW, Action Custom, & Misc.
Stock: Yes & Ships w/in 24Hrs*
 
Burst Wizard King Kong Super 2 Mosfet - DEANS Version
With the New Burst Wizard King Kong ELITE Mosfet unit, you can customize your AEG on a whole new level. This Mosfet unit functions as a Plug&Play unit via DEANS Plug, or is capable of being hard wired in.
Easily program the Mosfet Unit with Trigger Commands:
- Multiple Burst Modes
- Determine and Adjust Rate Of Fire
- Full Auto Delay
- Magazine Change Delay
- Check Battery ...
Burst Wizard King Kong Super 2 Mosfet D
Price:$39.99  per EACH
Video Review - Click on gun to see airsoft gun review Written Review - Click on gun to see airsoft gun review
QTY:   Add to cart Add to Wish List
 

DeepFire V2 Front Wired Torque Mechbox

Item Code: AC-UPI-DF-CM001
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Deep Fire Upgrade Parts
Manufacturer Part No: CM001
Stock: Yes & Ships w/in 24Hrs*
 
DeepFire V2 Front Wired Torque Mechbox
Specifications:
- Complete Gearbox with Titanium Internals
- Deans Type Connector Included
- M100 Spring Installed
- Compatible with Marui Based Front Wired M4/M16
DeepFire V2 Front Wired Torque Mechbox
Price:$249.99  per EACH
QTY:   Add to cart Add to Wish List
 

DeepFire V2 Rear Wired Torque Mechbox

Item Code: AC-UPI-DF-CM002
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Deep Fire Upgrade Parts
Manufacturer Part No: CM002
Stock: Yes & Ships w/in 24Hrs*
 
DeepFire V2 Rear Wired Torque Mechbox
Specifications:
- Complete Gearbox with Titanium Internals
- Deans Type Connector Included
- M100 Spring Installed
- Compatible with Marui Based Rear Wired M4/M16
DeepFire V2 Rear Wired Torque Mechbox
Price:$249.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire AEG Reinforced 6mm Gearbox II

Item Code: AC-UPI-DF-CPO21
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Deep Fire Upgrade Parts
Stock: Yes & Ships w/in 24Hrs*
 
Deep Fire Reinforced 6mm Mech Box Shell Ver 2
Built with solid metal composite to withstand higher spring tensions and outlast any standard gearbox. Perfect for upgraded gear boxes with higher spring tensions or for gear box replacements.
Deep Fire AEG Reinforced 6mm Gearbox II
Price:$29.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire 6mm Bearing Reinforced Gearbox

Item Code: AC-UPI-DF-CPO22
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Deep Fire Upgrade Parts
Stock: Yes & Ships w/in 24Hrs*
 
Deep Fire Reinforced 6mm Mech Box Shell Ver 2 with Bearing Bushings
Built with solid metal composite to withstand higher spring tensions and outlast any standard gearbox. Perfect for upgraded gear boxes with higher spring tensions or for gear box replacements.
Deep Fire 6mm Bearing Reinforced Gearbox
Price:$34.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire AEG Reinforced 7mm Gearbox II

Item Code: AC-UPI-DF-CPO25
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Deep Fire Upgrade Parts
Stock: Yes & Ships w/in 24Hrs*
 
Deep Fire Reinforced 7mm Mech Box Ver. 2
Built with solid metal composite to withstand higher spring tensions and outlast any standard gearbox. Perfect for upgraded gear boxes with higher spring tensions or for gear box replacements. ...
Deep Fire AEG Reinforced 7mm Gearbox II
Price:$39.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire AK47 AK74 M120 Full TuneUp Kit

Item Code: AC-UPI-DF-FTK34
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Deep Fire
Stock: Yes & Ships w/in 24Hrs*
 
Great M120 Full Tune Up Kit/Upgrade Kit for for your AK AEG Gear Box
Includes : Nozzle (CPN01P), Cylinder Head (CPC03), Cylinder (CPC14), Piston Head (CPP14A), Piston (CPP19), Spring Guide Rod (CPO06), Bushings (CPO16), Tappet Plate (CPO31) M120 Spring
For Basic Airsoft Gear Box Tutorial
Deep Fire AK47 AK74 M120 Full TuneUp Kit
Price:$109.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire G36C M120 Full Tune Up Kit

Item Code: AC-UPI-DF-FTK43
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Deep Fire Upgrade Parts
Stock: Ships in 4 Weeks
 
Deep Fire G36C M120 Full Tune Up Kit
- 120SP Tempered Spring
- Steel Cylinder
- 6mm Steel Oiless Bearings
- Air Seal Nozzle
- Ultra Lightweight Cylinder Head
- Titanium Piston
- Nylon Tappet Plate
- Spring Guide w/ Ball Bearing
- Ball Bearing Piston Head w/ O-Ring
- For Basic Airsoft Gear Box Tutorial
Deep Fire G36C M120 Full Tune Up Kit
Price:$109.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire M4 M120 Full Tune Up Kit

Item Code: AC-UPI-DF-FTK51
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Deep Fire Upgrade Parts
Stock: Yes & Ships w/in 24Hrs*
 
Great Enlarged M120 Full Tune Up Kit / Upgrade Kit for for your M4! AEG Gear Box
Enlarged Kit for Extra Air Volume
Includes : Nozzle (AC-DF-CPN16P), Cylinder Head (AC-UPI-DF-CPC07), Cylinder (AC-UPI-DF-CPC17), Piston Head (AC-UPI-DF-CPP18A), Piston (AC-UPI-DF-CPP19), Spring Guide Rod (AC-UPI-DF-CPS01), Bushings (AC-UPI-DF-CPO16), Tappet Plate (AC-UPI-DF-CPO33) M120 Spring
Deep Fire M4 M120 Full Tune Up Kit
Price:$109.99  per EACH
Written Review - Click on gun to see airsoft gun review
QTY:   Add to cart Add to Wish List
 

Deep Fire MP5 M120 Full Tune Up Kit

Item Code: AC-UPI-DF-FTK52
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Deep Fire Upgrade Parts
Stock: Yes & Ships w/in 24Hrs*
 
Great M120 Full Tune Up Kit / Upgrade Kit for for your AK! AEG Gear Box
Includes : Nozzle (CPN01P), Cylinder Head (CPC03), Cylinder (CPC14), Piston Head (CPP14A), Piston (CPP19), Spring Guide Rod (CPO06), Bushings (CPO16), Tappet Plate (CPO31) M120 Spring
For Basic Airsoft Gear Box Tutorial
Deep Fire MP5 M120 Full Tune Up Kit
Price:$109.99  per EACH
QTY:   Add to cart Add to Wish List
 

Deep Fire SIG551 SIG552 M120 Tune Up Kit

Item Code: AC-UPI-DF-FTK64
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Deep Fire Upgrade Parts
Stock: Yes & Ships w/in 24Hrs*
 
Deep Fire SIG551 SIG552 M120 Full Tune Up Kit
- 120SP Tempered Spring
- Steel Cylinder
- 6mm Steel Oiless Bearings
- Air Seal Nozzle
- Ultra Lightweight Cylinder Head
- Titanium Piston
- Nylon Tappet Plate
- Spring Guide w/ Ball Bearing
- Ball Bearing Piston Head w/ O-Ring
- For Basic Airsoft Gear Box Tutorial
Deep Fire SIG551 SIG552 M120 Tune Up Kit
Price:$109.99  per EACH
QTY:   Add to cart Add to Wish List
 

Systema MP5 Full Tune Up Kit (FTK99-18)

Item Code: AC-UPI-FTK99-02
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Systema Airsoft
Stock: Yes & Ships w/in 24Hrs*
 
The ULTIMATE FULL UPGRADE KIT for your MP5! Ver 2 AEG Gear Box
Includes (Top to bottom): Hexical Gear Set, Selector Plate, Bore Up Cylinder, Silent Piston Head, Silent Cylinder Head, Cylinder Nozzle, Polycarbonate Piston, Ball Bearings, Shims, Anti-reversal Latch, Cut Off Lever, Bearing Spring Guide Rod, M120 Spring
For Basic Airsoft Gear Box Tutorial
Systema MP5 Full Tune Up Kit (FTK99-18)
Price:$149.99  per EACH
QTY:   Add to cart Add to Wish List
 

Systema AK Full Tune Up Kit (FTK99-17)

Item Code: AC-UPI-FTK99-17
Airsoft Gun Style: AK47 AK74 Airsoft Magazines & Acc
Manufacturer: Systema Airsoft
Stock: Yes & Ships w/in 24Hrs*
 
The GREAT FULL UPGRADE KIT - Expert Full Tuneup Kit for AK47 AK74 V3 AEG Gear Box
Includes: Hexical Gear Se, Bore Up Cylinder, Silent Piston Head, Silent Cylinder Head, Cylinder Nozzle, Polycarbonate Piston, Metal Bushings, Shims, Anti-reversal Latch, Cut Off Lever, Bearing Spring Guide Rod, M130 Spring
For Basic Airsoft Gear Box Tutorial
Systema AK Full Tune Up Kit (FTK99-17)
Price:$154.99  per EACH
QTY:   Add to cart Add to Wish List
 

Airsoft AEG Rifle 20A 250V 20mm Fuse

Item Code: AC-UPI-FUSE-20
Airsoft Gun Style: Maintenance & Accesories for Airsoft
Manufacturer: IB (Intellect Battery)
Stock: Yes & Ships w/in 24Hrs*
 
Airsoft AEG Rifle 20A 250V 20mm Fuse
- Current: 20 Amp
- Voltage: 250 Volt
- Fuse Type: Slow Blow
- Dimension: 5x20mm
- RoHS Compliant
Airsoft AEG Rifle 20A 250V 20mm Fuse
Price:$0.99  per EACH
QTY:   Add to cart Add to Wish List
 

Airsoft AEG Rifle 20A 250V 30mm Fuse

Item Code: AC-UPI-FUSE-30
Airsoft Gun Style: Maintenance & Accesories for Airsoft
Manufacturer: IB (Intellect Battery)
Stock: Yes & Ships w/in 24Hrs*
 
Airsoft AEG Rifle 20A 250V 30mm Fuse
- Current: 20 Amp
- Voltage: 250 Volt
- Fuse Type: Slow Blow
- Dimension: 6x30mm
- RoHS Compliant
Airsoft AEG Rifle 20A 250V 30mm Fuse
Price:$0.99  per EACH
QTY:   Add to cart Add to Wish List
 

GHK V2 AEG to GBB Gearbox Conversion Kit

Item Code: AC-UPI-GHK-GBOX
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: GHK Airsoft
Manufacturer Part No: GBB BOX
Stock: Yes & Ships w/in 24Hrs*
 
GHK V2 AEG Gearbox Conversion Kit
The GHK Gearbox Conversion Kit gives you the ability to convert your M4 AEG from a Version 2 Gearbox to a Gas Blowback Rifle.
Kit Includes:
- GHK Gas Blowback Gearbox
- Hop Up Unit
- Buffer Tube Locking Unit
- 38 Round Gas M4 Magazine
GHK V2 AEG to GBB Gearbox Conversion Kit
Price:$99.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS MP5 MX5 PRO Selector Switch Assembly

Item Code: AC-UPI-ICS-M117
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: ICS (I Chih Shivan)
Manufacturer Part No: MA-117
Stock: Yes & Ships w/in 24Hrs*
 
ICS MP5 MX5 PRO Semi / Full Selector Switch Assembly
- Direct Drop In Replacement for ICS MP5 MX5 PRO Series
ICS MP5 MX5 PRO Selector Switch Assembly
Price:$14.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS M4 M16 Gearbox Screws Set MA-139

Item Code: AC-UPI-ICS-M139
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: ICS (I Chih Shivan)
Manufacturer Part No: MA-139
Stock: Yes & Ships w/in 24Hrs*
 
ICS M4 M16 Gearbox Screw Set MA-139
- 4 Long Screws
- 8 Short Screws
- Loctite'd Screw Ends for More Secure Fitment
ICS M4 M16 Gearbox Screws Set MA-139
Price:$4.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS MP5 Ver 2 Complete AEG GearBox

Item Code: AC-UPI-ICS-MC62
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: ICS (I Chih Shivan)
Stock: Yes & Ships w/in 24Hrs*
 
ICS MP5 AEG Gear Box Fully Assembled
- ICS & Tokyo Marui MP5 Compatible
Complete Airsoft GearBox Set includes: Reinforced Gear Box, M100 Spring, Metal Bushings, Metal Bering Spring Guide Rod, Aluminium Piston, & Gear Set
- Perfect option for fixing AEG airsoft gear box
ICS MP5 Ver 2 Complete AEG GearBox
Price:$99.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS Full Metal Airsoft AEG Gearbox V2

Item Code: AC-UPI-ICS-MC63
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: ICS (I Chih Shivan)
Manufacturer Part No: MC-63
Stock: Yes & Ships w/in 24Hrs*
 
ICS Full Metal Airsoft AEG Gearbox Shell V2
- ICS Full Metal Reinforced Gearbox Shell
- Compatible w/ most Airsoft AEG Rifles that use Version 2 Gearbox
- Perfect Upgrade for those AEG w/ weak or plastic Gearboxes
- DOES NOT Include ANY internal parts. Shell ONLY
- Some Modification May Be Required
ICS Full Metal Airsoft AEG Gearbox V2
Price:$29.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS MP5 Airsoft Gun AEG Selector Switch

Item Code: AC-UPI-ICS-MP02
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: ICS (I Chih Shivan)
Stock: Yes & Ships w/in 24Hrs*
 
ICS MP5 Selector Switch for Airsoft Guns
Compatible with most MP5 variants & brands (Tokyo Marui, ICS, Classic Army, etc.)
For Basic Airsoft Gear Box Tutorial
ICS MP5 Airsoft Gun AEG Selector Switch
Price:$9.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS MP5 MX5 Upper Gearbox Block MP-94

Item Code: AC-UPI-ICS-MP94
Airsoft Gun Style: Upgrades AEG Internal Upgrade Parts
Manufacturer: ICS (I Chih Shivan)
Manufacturer Part No: MP-94
Stock: Yes & Ships w/in 24Hrs*
 
ICS MP5 MX5 PRO Upper Gearbox Block MP-94
- Allow the Use of ICS M4 Upper Gearbox in MX5 Pro Series
ICS MP5 MX5 Upper Gearbox Block MP-94
Price:$11.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS Airsoft MX5 Pro AEG Fire Selector 98

Item Code: AC-UPI-ICS-MP98
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: ICS (I Chih Shivan)
Manufacturer Part No: MP-98
Stock: Yes & Ships w/in 24Hrs*
 
ICS MP5 MX5 Fire Select Slice MP-98
- Compatible w/ ICS MP5 MX5 Variants
ICS Airsoft MX5 Pro AEG Fire Selector 98
Price:$4.99  per EACH
QTY:   Add to cart Add to Wish List
 

*King Arms V2 Front Wiring Harness

Item Code: AC-UPI-KA-M4-F
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: King Arms Airsoft
Manufacturer Part No: KA WH M4 LOW
Stock: Ships in 1 Week
 
*King Arms V2 Front Wiring Harness
Low resistance silver cord and switch set. Suitable for Ver.2 Gearbox (Front Wiring).
Creates Lower Resistance of Currents to the Motor, Resulting in Snappy Trigger Response and Higher Rate of Fire.
*King Arms V2 Front Wiring Harness
Price:$24.99  per EACH
QTY:   Add to cart Add to Wish List
 

*King Arms Motor Connector Plugs Set

Item Code: AC-UPI-KA-PLUG
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: King Arms Airsoft
Manufacturer Part No: KA MOTOR CONNECTORS
Stock: Yes & Ships w/in 24Hrs*
 
*King Arms Motor Connector Plugs Set
Motor Connector Plugs Set comes with shrink wrap.
Replace Stock Motor Connectors with GOLD Plated Connectors for Better Electrical Conductivity
*King Arms Motor Connector Plugs Set
Price:$5.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex 8mm Bearing Gearbox Shell V2

Item Code: AC-UPI-LX-00-01
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-00-01
Stock: Ships in 5 Weeks
 
Lonex 8mm Bearing Gearbox Shell V2
This product is a mixture of a variety of high-temperature metallic material. After a lengthy testing, toughness and strength are up to the highest standards, and has the greatest impact-resistance. Features the most accurate 8mm holes design, 8mm Ball Bearing 8x3x2.5mm size to japanese specification.
Lonex 8mm Bearing Gearbox Shell V2
Price:$48.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex 8mm Bearing Gearbox Shell V3

Item Code: AC-UPI-LX-00-02
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-00-02
Stock: Yes & Ships w/in 24Hrs*
 
Lonex 8mm Bearing Gearbox Shell V3
This product is a mixture of a variety of high-temperature metallic material. After a lengthy testing, toughness and strength are up to the highest standards, and has the greatest impact-resistance. Features the most accurate 8mm holes design, 8mm Ball Bearing 8x3x2.5mm size to japanese specification.
Lonex 8mm Bearing Gearbox Shell V3
Price:$52.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex AEG Anti-Reversal Latch V2 V3

Item Code: AC-UPI-LX-01-15
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-15
Stock: Ships in 5 Weeks
 
Lonex AEG Anti-Reversal Latch V2/3
The stock anti-reversal latch can easily break after constant collision with the parts inside the gearbox, and the broken pieces are very likely to damage the expensive parts such as gear set. Lonex introduces an anti-reversal latch that is made of high density steel to replace the stock one, preventing the parts inside the gearbox to be damged.
Lonex AEG Anti-Reversal Latch V2 V3
Price:$6.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Anti-Heat Selector Plate AEG V2

Item Code: AC-UPI-LX-01-20
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-20
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Anti-Heat Selector Plate V2
The materials for making this selector plate are anti-wear and anti-heat for maxium durability. The special grease groove design allowing the selector plate to slide easily on the gearbox. This model fits from stock gearbox up to 8mm spec.
Lonex Anti-Heat Selector Plate AEG V2
Price:$9.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Cut Off Lever AEG Gearbox V2

Item Code: AC-UPI-LX-01-26
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-26
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Cut Off Lever AEG Gearbox V2
The cut off lever is built using anti-wear alloy, and the surface is hard coated to increase the durability.
Lonex Cut Off Lever AEG Gearbox V2
Price:$4.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Cut Off Lever AEG Gearbox V3

Item Code: AC-UPI-LX-01-27
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-27
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Cut Off Lever AEG Gearbox V3
The cut off lever is built using anti-wear alloy, and the surface is hard coated to increase the durability.
Lonex Cut Off Lever AEG Gearbox V3
Price:$4.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Gear Sector Clip AEG Gearbox

Item Code: AC-UPI-LX-01-44
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-44
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Gear Sector Clip AEG Gearbox
The surface of this gear sector clip is hard coated to improve the durability. This gear sector clip is installed between the axis of the third gear and the tappet, to solve the problem of unsmooth B.B. operation when tuning the gun to high speed.
Lonex Gear Sector Clip AEG Gearbox
Price:$12.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Gear Delay Sector Clip AEG Airsoft

Item Code: AC-UPI-LX-01-62
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-62
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Gear Delay Sector Clip AEG
The surface of this gear sector clip is hard coated to improve the durability. This gear sector clip is installed between the axis of the third gear and the tappet, to solve the problem of unsmooth B.B. operation when tuning the gun to high speed.
Lonex Gear Delay Sector Clip AEG Airsoft
Price:$12.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Siver Plated Wire Upgrade

Item Code: AC-UPI-LX-0139
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-39
Stock: Ships in 8 Weeks
 
Lonex Siver Plated Wire Upgrade
This highly conductive and anti-heat silver plated wire matches the Japanese specifications, so it can be installed easily.
Lonex Siver Plated Wire Upgrade
Price:$14.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Steel Upgrade Trigger for M16

Item Code: AC-UPI-LX-0140
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-40
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Steel Upgrade Trigger for M16
Features:
- Compatible with standard M16 or M4 Gearboxes
- Similar form to stock triggers
- Reinforced for Durability and Extended Use
Lonex Steel Upgrade Trigger for M16
Price:$9.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Steel Upgrade Trigger for MP5

Item Code: AC-UPI-LX-0141
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-41
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Steel Upgrade Trigger for MP5
Features:
- Compatible with standard MP5 Gearboxes
- Similar form to stock triggers
- Reinforced for Durability and Extended Use
Lonex Steel Upgrade Trigger for MP5
Price:$9.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Steel Upgrade Trigger for G3

Item Code: AC-UPI-LX-0142
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-42
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Steel Upgrade Trigger for G3
Features:
- Compatible with standard G3 Gearboxes
- Similar form to stock triggers
- Reinforced for Durability and Extended Use
Lonex Steel Upgrade Trigger for G3
Price:$9.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Steel Upgrade Trigger for AK

Item Code: AC-UPI-LX-0143
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-43
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Steel Upgrade Trigger for AK
Features:
- Compatible with standard AK Series Gearboxes
- Similar form to stock triggers
- Reinforced for Durability and Extended Use
Lonex Steel Upgrade Trigger for AK
Price:$9.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Gearbox Shim 20pc Set 15/3

Item Code: AC-UPI-LX-0145
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-45
Stock: Yes & Ships w/in 24Hrs*
 
Lonex Gearbox Shim 20pc Set 15/3
Set Contents:
- 10 x 0.15mm Shims
- 10 x 0.3mm Shims
Lonex Gearbox Shim 20pc Set 15/3
Price:$7.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex Gearbox Shim 20pc Set 10/2

Item Code: AC-UPI-LX-0177
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GB-01-77
Stock: Ships in 8 Weeks
 
Lonex Gearbox Shim 20pc Set 10/2
Set Contents:
- 10 x 0.10mm Shims
- 10 x 0.2mm Shims
Lonex Gearbox Shim 20pc Set 10/2
Price:$7.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex 8mm Bearing Complete Gearbox V2

Item Code: AC-UPI-LX-06-V2
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GBA-06
Stock: Ships in 5 Weeks
 
Lonex 8mm Bearing Complete Gearbox V2
Lonex introduced 2nd generation complete enhanced gearbox, compatible with all the M4/MP5/G3 AEG models on the market.

Features
- 2nd generation super gearbox
- Air seal nozzle
- Enhanced tappet
- Aluminum cylinder head
- Steel cylinder
- Aluminum piston head
- Enhanced 10 steel teeth piston
- Tune-up spring SP100
- Steel ball bearing spring guide
Lonex 8mm Bearing Complete Gearbox V2
Price:$170.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex 8mm Bearing Complete Gearbox V3

Item Code: AC-UPI-LX-20-V3
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GBA-20
Stock: Ships in 5 Weeks
 
Lonex 8mm Bearing Complete Gearbox V3
Lonex introduced 2nd generation complete enhanced gearbox, compatible with all the M4/MP5/G3 AEG models on the market.

Features
- 2nd generation super gearbox
- Air seal nozzle
- Enhanced tappet
- Aluminum cylinder head
- Steel cylinder
- Aluminum piston head
- Enhanced 10 steel teeth piston
- Tune-up spring SP100
- Steel ball bearing spring guide
Lonex 8mm Bearing Complete Gearbox V3
Price:$169.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex M4A1 Gearbox Upgrade Set SP120

Item Code: AC-UPI-LX-GBA01
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GBA-01
Stock: Yes & Ships w/in 24Hrs*
 
Lonex M4A1 Gearbox Upgrade Set SP120
Features:
- Complete Drop In Gearbox for M4A1 Rifles
- Compatible with most Metal Receiver brands on the market


Lonex M4A1 Gearbox Upgrade Set SP120
Price:$199.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex M16 A1 Gearbox Upgrade Set SP120

Item Code: AC-UPI-LX-GBA05
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GBA-05
Stock: Yes & Ships w/in 24Hrs*
 
Lonex M16 A1 Gearbox Upgrade Set SP120
Features:
- Complete Drop In Gearbox for M16 Rifles
- Compatible with most Metal Receiver brands on the market


Lonex M16 A1 Gearbox Upgrade Set SP120
Price:$199.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex AK47 Gearbox Upgrade Set SP120

Item Code: AC-UPI-LX-GBA19
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GBA-19
Stock: Yes & Ships w/in 24Hrs*
 
Lonex AK47 Gearbox Upgrade Set SP120
Features:
- Complete Drop In Gearbox for AK Style Rifles
- Compatible with most Metal Receiver brands on the market


Lonex AK47 Gearbox Upgrade Set SP120
Price:$199.99  per EACH
QTY:   Add to cart Add to Wish List
 

Lonex AKS74U Gearbox Upgrade Set SP120

Item Code: AC-UPI-LX-GBA22
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Lonex Airsoft
Manufacturer Part No: GBA-22
Stock: Yes & Ships w/in 24Hrs*
 
Lonex AKS74U Full Gearbox Upgrade Set 120
Features:
- Complete Drop In Gearbox for AK Style Rifles
- Compatible with most Metal Receiver brands on the market


Lonex AKS74U Gearbox Upgrade Set SP120
Price:$199.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS M4 Upgraded Upper Gearbox MA-56

Item Code: AC-UPI-MA120K
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: ICS (I Chih Shivan)
Stock: Yes & Ships w/in 24Hrs*
 
ICS M4 Upgraded Upper Gear Box with M120 Spring
Includes: Upper Gear Box, M120 Spring, Metal Bearing Spring Guide Rod, Tappet Plate, Piston, Piston Head, Ported Cylinder, Cylinder Head, and Feed Nozzle.
Compatible with ICS M4 or M16
Upgrades FPS to 400
ICS M4 Upgraded Upper Gearbox MA-56
Price:$59.99  per EACH
QTY:   Add to cart Add to Wish List
 

ICS Upgraded MP5 Ver 2 Gear Box Electric

Item Code: AC-UPI-MC-53
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: ICS (I Chih Shivan)
Stock: Yes & Ships w/in 24Hrs*
 
Compatible w/ ICS or Tokyo Marui MP5, G3, M16, M4
Upgraded Gear Box Set includes: Reinforced Gear Box, M120 Spring, Metal Bushings, Metal Bering Spring Guide Rod, Aluminium Piston, & Gear Set
- New 2008 Version: Now Even More Re-inforced
ICS Upgraded MP5 Ver 2 Gear Box Electric
Price:$74.99  per EACH
QTY:   Add to cart Add to Wish List
 

MODIFY M4-A1 Hi-Speed Complete Gear Box

Item Code: AC-UPI-MOD-804
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: MOD MB M4 S (CGB-804)
Stock: Yes & Ships w/in 24Hrs*
 
MODIFY M4-A1 Hi-Speed Complete V2 Gearbox
Include:
- M100 Spring
- Rotary Spring Guide
- Tappet Plate
- Modular Gear Set (16.32.1)
- Seletor Plate
- PolyCarb Piston
- PolyCarb Piston Head w/ Bearing
MODIFY M4-A1 Hi-Speed Complete Gear Box
Price:$219.99  per EACH
QTY:   Add to cart Add to Wish List
 

MODIFY M4-A1 Hi-Torque Complete Gear Box

Item Code: AC-UPI-MOD-814
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: MOD MB M4 TQ (CGB-814)
Stock: Yes & Ships w/in 24Hrs*
 
MODIFY M4-A1 Hi-Torque Complete V2 Gearbox
Include:
- M120 Spring
- Rotary Spring Guide
- Tappet Plate
- Modular Gear Set (21.6)
- Seletor Plate
- PolyCarb Piston
- PolyCarb Piston Head w/ Bearing
MODIFY M4-A1 Hi-Torque Complete Gear Box
Price:$209.99  per EACH
QTY:   Add to cart Add to Wish List
 

*MODIFY Low Resistance Silver Wire

Item Code: AC-UPI-MOD-WIRE
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: MOD WIRE CORD
Stock: Yes & Ships w/in 24Hrs*
 
*Modify Low Resistance Silver Wire
Size: 50core
Conductor: Low resistance Silver Plated Copper Wire
Insulation: High Temperature FEP
Approximate Overall Diameter: 1.86mm
Length: Approx 180cm
*MODIFY Low Resistance Silver Wire
Price:$14.99  per EACH
QTY:   Add to cart Add to Wish List
 

Systema MP5 Airsoft Gear Mech Box M120

Item Code: AC-UPI-SMP-12X
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Systema Airsoft
Stock: Yes & Ships w/in 24Hrs*
 
Systema Complete Mecha-Box for MP5 Series (A4, A5, SD5, SD6)
- Complete Drop In Gear Box for Full Stock Rear Battery MP5 with M120 Upgrade Spring for 370 - 400 FPS
- All internal parts completed upgraded with Systema Parts (gears, bearings, tappet late, cylinder, bearing spring guide rod, selector plate, low resistance wires)
- Completely Reinforced Heavy Duty Alloy Gear Box
- Includes Torque Up Gear Set with Teflon Cylinder
Systema MP5 Airsoft Gear Mech Box M120
Price:$239.99  per EACH
QTY:   Add to cart Add to Wish List
 

Systema MP5 Energy Gear Box M150

Item Code: AC-UPI-SMP-150
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Systema Airsoft
Stock: Yes & Ships w/in 24Hrs*
 
Systema Complete Energy Mecha-Box for MP5 Series (A4, A5, SD5, SD6)
- Complete Drop In Gear Box for Full Stock Rear Battery MP5 with M150 Upgrade Spring for 470 - 500 FPS
- All internal parts completed upgraded with Systema Parts (gears, bearings, tappet late, cylinder, bearing spring guide rod, selector plate, low resistance wires)
- Completely Reinforced Heavy Duty Alloy Gear Box
- Includes All Helical Super Torque Up Gear Set with Bore Up Cylinder Set
Systema MP5 Energy Gear Box M150
Price:$259.99  per EACH
QTY:   Add to cart Add to Wish List
 

*Speed V2 AEG Tunable Trigger Black

Item Code: AC-UPI-TRIG-BLK
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: SA BLD TRIG B (SA3035)
Stock: Ships in 1 Week
 
*Speed V2 AEG Tunable Trigger Black
High Performance Tunable Trigger.
CNC Machined USA Grade Aluminum.
Set Screw For Adjustable Backlash
Precision Sear
Hardened Pivot Pin
Weight Reduction Holes
Designed For M4/M16 AEGs
*Speed V2 AEG Tunable Trigger Black
Price:$27.99  per EACH
QTY:   Add to cart Add to Wish List
 

*Speed V2 AEG Tunable Trigger Silver

Item Code: AC-UPI-TRIG-SIL
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: SA BLD TRIG S (SA3034)
Stock: Ships in 1 Week
 
*Speed V2 AEG Tunable Trigger Silver
High Performance Tunable Trigger.
CNC Machined USA Grade Aluminum.
Set Screw For Adjustable Backlash
Precision Sear
Hardened Pivot Pin
Weight Reduction Holes
Designed For M4/M16 AEGs
*Speed V2 AEG Tunable Trigger Silver
Price:$27.99  per EACH
QTY:   Add to cart Add to Wish List
 

WE Airsoft M4 Closed Bolt Repair Kit

Item Code: AC-UPI-WE-CBKIT
Airsoft Gun Style: M4 M16 Airsoft Gun Internal Upgrades
Manufacturer: WE Tech Industries
Stock: Yes & Ships w/in 24Hrs*
 
WE M4 Airsoft Complete Close Bolt Repair Kit
Kit include:
- Bolt Carrier Group & Nozzle
- Trigger Group Assembly
- Inner Barrel
- Hop-Up Chamber
- Dust Cover
- Bolt Catch
- Airsoft Upgrade Video Available - Click for More Info

Please note, kit does NOT include a complete rifle. It only include necessary parts to repair your WE close bolt M4.

WE Airsoft M4 Closed Bolt Repair Kit
Price:$69.99  per EACH
QTY:   Add to cart Add to Wish List
 

WE Airsoft M4 Open Bolt Conversion Kit

Item Code: AC-UPI-WE-OBKIT
Airsoft Gun Style: M4 M16 Airsoft Gun Internal Upgrades
Manufacturer: WE Tech Industries
Manufacturer Part No: GR-196LW
Stock: Yes & Ships w/in 24Hrs*
 
WE M4 Airsoft Complete Close Bolt to Open Bolt Conversion Kit
- Kit include Bolt Carrier Group & Nozzle
- Trigger Group Assembly
- Inner Barrel
- Hop-Up Chamber
- Dust Cover
- Bolt Catch
- Magazine Flow Nozzle
- Detent Spring
- Airsoft Upgrade Video Available - Click for More Info

Please note, kit does NOT include a complete rifle. It only include necessary parts to convert your WE close bolt M4 into an open bolt M4.

WE Airsoft M4 Open Bolt Conversion Kit
Price:$89.99  per EACH
Video Review - Click on gun to see airsoft gun review
QTY:   Add to cart Add to Wish List
 

*MODIFY Low Res Wire V2 Rear Dean

Item Code: AC-UPI-WH-M16-R
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: MOD WH M16 ULTRA
Stock: Ships in 1 Week
 
*Modify Low Res Wire V2 Rear Dean
Modify Quantum Low Resistance Wire Set For M16 Series (Rear) with Silver-Plated Cord and Ultra Deans Plug
Creates Lower Resistance of Currents to the Motor, Resulting in Snappy Trigger Response and Higher Rate of Fire
*MODIFY Low Res Wire V2 Rear Dean
Price:$25.99  per EACH
QTY:   Add to cart Add to Wish List
 

*MODIFY Low Res Wire V2 Front Dean

Item Code: AC-UPI-WH-M4-F
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: MOD WH M4 ULTRA
Stock: Ships in 1 Week
 
*Modify Low Res Wire V2 Front Dean
Modify Quantum Low Resistance Wire Set For M4 series (Front) with Silver-Plated Cord and Deans Ultra Plug
Creates Lower Resistance of Currents to the motor, Resulting in Snappy Trigger Response and Higher Rate of Fire
*MODIFY Low Res Wire V2 Front Dean
Price:$25.99  per EACH
QTY:   Add to cart Add to Wish List
 

APS Silver Edge Version 2 Full Gearbox

Item Code: UPI-APS-SE-2HR
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: APS Airsoft
Manufacturer Part No: SE-2HR
Stock: Yes & Ships w/in 24Hrs*
 
APS Silver Edge Version 2 Complete Gearbox
Features:
- Quick Change Spring System
- Polished and Buffed Surface
- 8mm Bearing Bushings
- 100% TM Compatible Parts
APS Silver Edge Version 2 Full Gearbox
Price:$69.99  per EACH
QTY:   Add to cart Add to Wish List
 

*MODIFY Low Res M16 Rear Wire Harness T

Item Code: UPI-MOD-WH-M16
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: Modify Airsoft & Speed Triggers
Manufacturer Part No: MOD WH M16
Stock: Ships in 1 Week
 
*MODIFY Low Resistance M16 Rear Wire Harness Tamiya
Modify Quantum Low Resistance Wire Set For M16 Series (Rear) with Silver-Plated Cord and Small Tamiya Plug
Creates Lower Resistance of Currents to the Motor, Resulting in Snappy Trigger Response and Higher Rate of Fire
*MODIFY Low Res M16 Rear Wire Harness T
Price:$24.99  per EACH
QTY:   Add to cart Add to Wish List
 

WE M92 Replacement Trigger Assembly

Item Code: UPI-WE-M92-TRIG
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: WE Tech Industries
Manufacturer Part No: M92 34
Stock: Yes & Ships w/in 24Hrs*
 
WE M92 Replacement Trigger Assembly
This is a Factory Replacement Trigger for the WE Tech M92 Gas Blowback Pistol Series.
WE M92 Replacement Trigger Assembly
Price:$4.99  per EACH
QTY:   Add to cart Add to Wish List
 

WE PDW Selector Switch Replacement

Item Code: UPI-WE-PDW-SEL
Airsoft Gun Style: Upgrades Airsoft Gear Box Internals
Manufacturer: WE Tech Industries
Manufacturer Part No: PDW 60 77 81
Stock: Yes & Ships w/in 24Hrs*
 
WE PDW Selector Switch Replacement
This is a Factory Replacement Selector Switch for the WE Tech PDW Gas Blowback Rifle.
WE PDW Selector Switch Replacement
Price:$4.99  per EACH
QTY:   Add to cart Add to Wish List
 

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