King Arms Full Metal Fully Licensed Colt M4A1 Carbine Airsoft Gas Blowback GBB Rifle

SoftAir USA / Cybergun33960
4.5 stars, based on 10 reviews

$299.99 $239.99

This item is currently Discontinued

ID: 33960 (GR-KA-M4A1)
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.

10 Customer Reviews

by Jean-Pascal S. on 07/10/2013
"Ok, i got this gun and it worked for a day, then the mag started to give out, and the bolt cracked... i replaced the mag, and the entire bolt carrier, and made sure everything was lubed up, and i couldnt get this gun to work again for more than 4 shots.

good recoil
shoots hard
amazing body (one of the best features of this gun)

poor internals
upgrading said internals can get way too costly for what its worth
leaky mags

all in all, maybe i got a dud, but it seems to be an all too common story with this gun to have it be just a dud. your better saving a bit more to get a KWA LM4 or perhaps a G&P, if you prefer this platform
by gavin p. on 04/26/2013
"Awesome gun!!! Just got it and it shoots amazing!!! Fires 450fps with propane and is great in summer outdoor games (gas mags freeze up in the cold) put a good lot of bbs through this thing And only one part has broken so far.

Realism is pretty awesome. Turns heads
Build quality is great (its a king arms what do you expect?)
Blowback is very realistic
Fps (great for outdoor use!!)

Broke loading nozzle! (Get a g&p one when you get this rifle)
Mag freezes up in cold (all gbbs have this problem)
Mag leaks a bit (get the regular g&p or the 39rd pmag! They are much better!)

Ammo capacity isn't that big of a deal for me. Overall a great gun and is King Arms quality!!
by margaret a. on 11/13/2012
"i bought this gun about a year ago now and i have to say that if you are a newbie to gbbr then this gun is for you because out of the box it is great. if you are more advanced i would recommend the g and p woc because it is way better but requries some knowledge as the manual is a fail and doesnt have everything you need. the only major down fall isnt even the gun its the mags. for 5 dollars more buy the g and p mags and save uself a lot of trouble
z King Arms Full Metal Fully Licensed Colt M4A1 Carbine Airsoft Gas Blowback GBB Rifle

King Arms Full Metal Fully Licensed Colt M4A1 Carbine Airsoft Gas Blowback GBB Rifle

This is one of the newest gas blowback in the market which can lead to a totally different type of gaming. It is fully ATF approved with tons of after-market conversion kits. Great compatibility and parts because it is 99% compatible to the Western Arms & G&P M4 GBB system. The King Arms m4 gas blowback is fully licensed by Colt and equipped with stamped Colt trade-mark.


  • ATF Approved.
  • Full Colt Trade-mark, officially licensed by Colt.
  • Metal receiver.
  • 50 round gas powered magazine included.
*Being G&P & Western Arms 99% compatible. (Slight mod to meet US ATF requirements). This rifle offers tons of after-market custom parts and upgrade parts. Most of the exterior parts are 100% compatible and 99% of the internal parts are compatible. Check out our WA & WE gas blowback m4 custom parts section to customize your King Arms M4 GBB today!

Magazine Capacity: 50 Rounds. One included. Use all WA M4 / G&P M4 GBB compatible magazines.
(The GHK version magazine seems to not fit very well and would require modification to work, due to compatibility issues. Get KA or G&P for best compatibility and performance.)
Firing Mode: Semi Automatic, Full Automatic and Safety
Hopup: Adjustable
Weight: 2270g. (Without magazine).
Overall Length: 770mm (850 with stock extended)
Inner Barrel Length: 368mm. The King Arms M4 GBB uses AEG type tight bore inner barrels.
Gas: Green gas, propane adapter, co2 magazine.
System: Open bolt
Action: Gas blowback
Caliber: 6mm / High grade bbs recommended.
Muzzle Velocity: 330~380 FPS
Package Includes: Gun, Magazine
Firing Mode: Fully Automatic, Semi Automatic, Safety
Range: 70~140 feet
Materials: Aluminum, Nylon Fiber Polymer
Length: 770mm-850mm
Source of Power: Green Gas, Propane with adapter
Manufacturer: King Arms under license from Cybergun (Colt Trademark and Colt Logo are property of New Colt Holding Corp.)

This item is Discontinued.

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