Well MP5K G55 Gas Blowback GBB Airsoft Rifle
- Velocity: 300 fps (0.2 g BB) / Range 120-140 feet
- Barrel Length: 6 inches / 15 cm
- Magazine Capacity: 22 Rounds
- Individually Certified by AirSplat's Master Techs
- Light And Compact
- Super Fast Rate of Fire
- ABS Construction
- Airsoft Gun Review Available - Click More Info
- Made in China
This MP5K Gas blowback gun is absolutely amazing. This thing pumps out an entire mag in just over one second! It is probably more useful in semi-auto, but you do have the spray and pray option. The ABS Construction allows for a lighter gun, and the compact design allows for maximum mobility and concealment.
Well G55 (Gas Blowback MP5K) Click for more reviews
Well G55 Review
So to be honest, I was born a hyper-skeptic. When something sounds too
good to be true, it is probably the opposite. It was this overbearing
disbelief that I had to fight back when I clicked the ‘Submit Order' button at
RSOV. I mean really, a full-on GBB MP5k Maruzen clone, for 50
dollars. Luckily however, curiosity is also a natural trait, and with only
$50 on the line, curiosity beat common sense. And the result, I must say,
is quite alluring!
Real Steel History:
The MP5K is based on the successful MP5-series of submachine gun
produced by the German-based firm. The MP5K is a
specialized shortened version of the base submachine gun featuring a short
barrel and forward grip for added control when firing.
The MP5K is sometimes dubbed the ‘Room Broom' because of it's intended
purpose. The compact size and man-stopping firepower make sure that the weapon
delivers as advertised. The base system features only single and automatic fire
capability. Three round bursting mode is available on variant models.
Fast forward to yesterday, and my big brown buddies brought me an enormous
carton of new toys. I opened the box with my knife, and surely enough, the
G55 was sitting on the top of the pile, begging me to play with it.
And how could I argue! The gun actually came in extremely
nice packing, with the very dense, solid foam, reminiscent of what a G&P gun
comes in. Inside, you find the gun, the mag, the manual, and (I thought
this was excellent) a set of spare valves for your mag. Awesome idea!
You lift the gun out to find it surprisingly light, weighing
somewhere in the neighborhood of 2-3 pounds. Not bad, with a very nice
plastic finish onthe lower receiver. The upper has a bit
ofcheap plastic syndrome, and the writing on the magwell just looks silly,
but these things are easily overlooked.
Unlike the various AEG MP5k's out there, this one does not have to
house a motor, and thus the grip is slimmer, and hollow.
The buttplate is the only useful sling point on this gun, unlike
the TM which has an eye loop at the front of the gun as well. Its alright
though, as a one point sling setup makes this gun quite good as a backup.
The foregrip seems just as solid and well constructed as any
One benefit of this gun is that its very simple to
take apart. Pop the two pins at the buttcap, and remove the pin by the
magwell, and the lower receiver can be slid off easily. The whole bolt
assembly can then be pulled back out of the receiver, and the trigger mechanism
and barrel system can be slid out directly behind it!
The gun goes to bits in a matter of seconds, and you
have access to all of the internals. Shown below is the trigger group in
the lower receiver.
Basically, those two posts poking towards the camera
trade place as the fire selector is operated, allowing the bolt to either catch
or not after each shot. This whole assembly is made of metal aside from
This is the sear/barrel assembly, and again, this is
all made of metal. One cautionary word however, is to make sure to baby
this piece. It contains a tiny little spring, contained below, and if
you're as stupid as the author, you will manage to shoot it off into the voids
of your workbench by playing with this assembly. All is well and it was
found, but beware!
Next we come to the bolt assembly, a point of
contention for Maruzen owners. I've never owned the Maruzen, nor have I
really read enough to understand where it breaks. All I know is that the
blowback chamber is made of metal, while the BB loading muzzle appears to be
plastic, and similar to a GBB Pistol's but shorter. The bolt cover is also
This is the facing side of the bolt, nothing you
wouldn't expect to see
The opposite side, showing the BB stripping nub a bit better, as
well as the bit where the recoil spring attaches.
The bottom of the bolt, already showing some wear on
the metal from firing
The BB muzzle held open to show the blowback
chamber. These Next three were requested by Horsem4n on Arnies, and I was
only too happy to oblige.
A poor picture of the top of the bolt. The two
screws to get down to the blowback unit are visible near the top of the
The top of the blowback chamber, once freed from its
fake bolt hanger-on. The spring guide and bb-muzzle spring are to the left
of the blowback chamber.
This is the fully disassembled blowback unit, down
to its 5 component bits. I was surprised by the build quality on this for
sure! In all, the amount of metal in this thing is impressive, and all I
really intend on for the future is buying two or three of those Guarder
reinforced loading muzzles. Now lets move on to operating the weapon!
Naturally, the next step was to slap the mag into the gunand see how
that felt. It makes the gun a tad front heavy, but its easily overlookable
when you realize that you're wielding around an excellent little compact
Of course, the next step is to operate it! Pulling the
charging handle is not quite as much fun as you'd expect, think of it like
pulling the charging handle on a Marui MP5k except it actually does
something! You get the feel of clackety plastic as you pull it back and
let it go, but by the feel of things, at least the cocking handle appears quite
*Disclaimer, results of all HK slaps are your fault. Period.
When you look over on the other side of the gun, you'll see the bolt is now
open, looking like the image below. This gun, unlike the real MP5k, fires
from an open bolt.
This is part of what gives it some functional
‘credentials', by allowing an absolutely vomitous rate of fire.
The fire-select lever feels quite nice and substantial and clicks into place
much better than a comparable AEG's. For those uninitiated into the
cult (probably one of you… at most…), the selector is shown in the safe, semi,
and auto positions below. All 3 positions are fully functional, though I
occasionally get a full auto burst out of the semi function.
You'll also have to load the mag. The mag is a simple sheet-steel mag,
with silent fill valves (Nice!), and an easy to use follower. The mag
holds 21 BBs.
I must however mention that after one weekend's use, I've noticed that it has
left both mine and my friends car smelling distinctly of propane. This
means that some sort of slow leak has developed. I couldn't hear the leak,
so I can't tell which valve failed, but the leak is quite slow, as I left the
gun charged in my car over night, and it still shot fine the next morning.
If the condition worsens, I will update my review.
Pretty standard GBB stuff here, not much to see really!
Now one thing that needs to be pointed out here is my rear sight. The
MP5k is equipped with reasonably standard type ‘drum' sights. The
correct sight picture is shown below:
The problem that at least has manifested itself on my G55 is that the detent
that holds the sight in place is off canter, and actually clicks into place
between the sight's apertures. Not that this is necessarily a gun that one
technically ‘aims' with, but the issue must be brought to light.
So now you've loaded a mag, and gotten it into your gun. Set the fire
select to what you'd like and brace yourself. Note that the fire selector
has 3 positions, safe, semi, and full. The interesting bit is, the trigger
stays relatvely limp, and only really catches when the bolt is opened. As
opposed to other GBBs, which tend to have much snappier and more mechanical
feeling triggers, this one is spongy, much like (insert your choice of AEG
So now, the moment of truth. I loaded my new gun up with .20s, and
gassed with propane, and went to test the gun. As an interesting
aside, the Maruzen MP5k (This gun's clone twin) has been known to fall
apart on use with green/propane. It is my intention to run this gun on
propane until it fails, at which point I will update the review and describe the
Momentarily, I find myself behind my house, pointing the gun at a few cans,
and wondering if I spent $50 on something goofy. Then, I switched to full
auto and pulled the trigger; PAAAAAAPAPAPAPAPAPAPAPAPAPAPAP! This
gun's rate of fire is absolutely astronomical. It managed to chew through
all 21 bb's before I could remember to let off the trigger! The
shootingfeedback you get from the gun is excellent for a tiny little gun,
as the whole gun shakes in your hand and sends little recoil shocks up your
shoulder. Another important bit to mention is that the report from this
gunissmegging loud.When you fire at someone with this, I
guarantee they willfind cover and hide there. This thing simply
looks and soundsevil. One downside however, is that the mag has no
bolt catch, so you really have to pay attention to the BBs flying out the front
of the gun, as once you're out, the gun will keep on shooting until its out of
gas or you let off the trigger.
As you can see, the gun holds a tight little group,
with 16/21 bbs hitting on the paper. Not super accurate, but at close
range, not bad. This all changes severely though at range. Here is
the target as shot at 50 feet:
At 50 feet, the consistency goes from meh to plain out bad. That's not
a bad thing though, as really, the weapon is meant to simply saturate a small
area with BBs in a very very short amount of time, and that it does.
Anyone attempting to shoot any further than 50ft with this would be a bit
For what it was, the gun was an admirable performer. Within 30 feet, I
hit all 5 cans and left serious dents in them. I was so impressed that I
took my time today to go to the local indoor airsoft place. Per the
Madbull V2 chrono at the field, the G55 is shooting 310FPS, at an ambient
temperature between 30 or 40 Fahrenheit.
As to long term durability, I cannot yet say, though I can say that I've used
the gun today down at our indoor field, extensively. Nothing is more fun
than clouding BBs at people with this! I spent most of the day today,
which consisted of running the counter at an indoor airsoft field, letting
people fondle it and have a few test fires. Everyone seemed thoroughly
impressed. I'd estimate that so far, I have run 50 mags of 21 bb's through
this between my own use, and letting all the awed newbies play around with
it. I did give the gun a little silicone about midway through the day, but
have not experienced any misfires, misfeeds, or problems of yet.
Of course, running the counter meant playing on dead-times. At an
indoor field with hi-cap happy youngsters leaning on the trigger, what did I
do? I walked onto the field with 21 rounds in my MP5k, and the excellent
Meister Glock 17 to back myself up with. In the first game, I'm not sure
how it happened, buta little guy with a SAW popped around a barricade just
sothat I gotto dumpthe MP5k at him, hitting him multiple
times.Walking back to thestaging areaafter the game, he
mentioned to mehow scary the gun sounded, as well as a number of sore
spots he had on historso. And so the day went.
So, all in all, I'd say I've given this thing a pretty favorable
review. I've definitely had my skepticism slapped to the ground by this
little guy, who manages to thoroughly impress, even through my bias against it
when I first ordered it. More detailed ratings are below!
All it needs is a bolt catch when the mag is empty, then I would have no
External Design: 2.5/5
This is where the gun really takes a bath. Cheap finish, poor cocking
feel contribute to low scores, as well as the issues with the rear sight.
A metal version of this would be positively stunning.
This little gunstrikes youas a bit of a novelty or a parlor trick
at the offset, but as you get to know it abit better,the gun
proves to be fully skirmish worthy, even witha capacity of a mere 21
rounds, its quite usable,quite scary, and out and out awesome.
Everyone should have one of these.
The Final Verdict: A Keeper
This little guy is an excellent shooter at a fantastic price. This gun
was good enough to earn some of my (somewhat) limited wall space. As long
as it works, it will be up there as a gun I smile at using! I am thrilled
to own it, and thrilled to have reviewed it for you all.
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