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Newly Arrived

Tactical Tailor Short Malice Clip 4 Pack

$5.99 ADD TO CART

SRU Universal Belt Pistol Holster

$59.99 ADD TO CART

Tactical Tailor Vertical E&E Pouch

$40.99 ADD TO CART
 

Upgrades Airsoft AEG Gear Box

Full Line of Airsoft Gun AEG Gear Box and Mech Box. These are usually fully assembed, drop in gear boxes. These are great choices for a simple but complete overhaul of the entire gear box.

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
 

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 Airsoft M16-A1/VN Energy Gearbox

Item Code: AC-UPI-S16R-150
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Systema Airsoft
Manufacturer Part No: EN-GB16RD-15-0
Stock: Ships in 3 Weeks
 
Systema M16-A1/VN Complete Energy Mecha-Box EN-GB16RD-15-0
- Complete Drop In Gear Box for Full Stock Rear Battery M16 / M15 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 Airsoft M16-A1/VN Energy Gearbox
Price:$259.99  per EACH
QTY:   Add to cart Add to Wish List
 

Systema M16A2 / SR16 Gear Mech Box M120

Item Code: AC-UPI-S16R-120
Airsoft Gun Style: Upgrades Airsoft AEG Gear Box
Manufacturer: Systema Airsoft
Stock: Ships in 3 Weeks
 
Systema Complete Mecha-Box for M16-A2 / M15 / SR16
- Complete Drop In Gear Box for Full Stock Rear Battery M16 / M15 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
- Not Compatible with ICS or Olympic Arms
Systema M16A2 / SR16 Gear Mech Box M120
Price:$239.99  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 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
 

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
 

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 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 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
 

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: Ships in 4 Weeks
 
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
 

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 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 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
 

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
 

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
 

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
 

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 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 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
 

*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: Ships in 1 Week
 
*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
 
 

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