Contact Us (626) 286-0360 Walk-In Superstore Daily Deal
New Phone Support Hours M-F 8am-5pm PST
Browse by Type or Category
Summer Sale! 20% OFF (Exclusions apply, see details)   Use Code: SUMMER2017

Pre-Order ETA August 2017 King Arms Full Metal Fully Licensed Colt M4A1 Carbine Airsoft Gas Blowback GBB Rifle

ID: 33960 (GR-KA-M4A1)
SoftAir USA / Cybergun33960
4.3 stars, based on 12 reviews
Pre-Order ETA August 2017 King Arms Full Metal Fully Licensed Colt M4A1 Carbine Airsoft Gas Blowback GBB Rifle
Hover or touch above to zoom


MAP ProtectedExempt From Coupons
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.

No Payments + No Interest if paid in full in 6 months through PayPal Credit. Simply check out using PayPal and select PayPal Credit!

This is a pre-order item with an ETA (estimated arrival) of August 2017

A pre-order item is an up coming new product, or an item in the process of being restocked to the platform by it's manufacturer.By pre-ordering an item, you will have reserved the inventory availability to receive it before the goods arrive. All pre-order items are eligible for a full refund at any time during the waiting period; simply call or drop us an email with the order # and the pre-order item you would like to cancel for an immediate refund. Due to circumstances such as US customs inspection, factory delays and other situations out of our control, all ETAs (estimated time of arrival) are estimated to our best ability and are subject to change.

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.)

FPS Range: 330-380

12 Customer Reviews

(Write a review)

by Eric C. on 06/03/2017
"This thing is a joy to shoot when it's working. The kick feels great. You'll be eager to spew some rounds in full-auto, but it's actually remarkably accurate in semi. A red dot can help you hit even far-away targets. On the two occasions I've been able to field it, it's been more fun than any AEG could hope to be.

Here's the crux: parts are prone to breaking. If you expect reliability then this gun will disappoint you. Tinkering and buying parts was fine at first, but apparently WA-system guns have a reputation as money pits. This was certainly the case for me.

So far I've had to replace the factory loading nozzle/bolt, bolt locking plate, bucking, magazine, a second bucking, and the bolt carrier. Each for separate, successive issues. I've upgraded to an aluminum bolt, loading nozzle, NPAS, and hop chamber. Upgrading to GHK CO2 magazines likely contributed to the bolt carrier failure. Ordered a steel bolt carrier in hopes of salvaging this build. The main takeaway from my experience is that if you want a skirmishable GBBR, this one will set you back far more than its sticker price.

Feels great
Nice kick
Realistic operation
Availability of aftermarket parts

High downtime
Expensive to upgrade

If you want to spend more time on the field than on the bench, your money would go farther with a KWA, WE, or KJW GBBR.
by Chris D. on 09/29/2016
"Great starter gun for GBB. Be aware though that GBBs generally need a little extra TLC than those sewing machine sounding AEGs.

Accuracy is top notch
FPS is adjustable
People get terrified when they hear you
Very real feel and realistic field stripping
Good hop-up
Removable top rail exposes a rail for a scope if you want to DMR

Gotta keep it lubed up
Magazines extremely prone to leakage
Firing automatic could risk a misfire and a broken loading nozzle (one of the only plastic parts of the gun)
This won't cooperate in cold weather
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

Questions, Answers and Comments

Discuss about Pre-Order ETA August 2017 King Arms Full Metal Fully Licensed Colt M4A1 Carbine Airsoft Gas Blowback GBB Rifle with your friends and fellow shoppers!

Comment or answer questions for a chance to win awesome prizes. Details can be found on the Facebook page. Remember to check "Also post on Facebook" to qualify for the giveaways!

Have an urgent question about this item? We monitor these comments daily, but it may be faster to email us directly or call us at (626) 286-0360. Our resident experts are standing by to answer your questions!

This is a pre-order item.

Pre-order estimated arrival: August 2017

By adding a pre-order item to your shopping cart, you will guarantee yourself to have the item reserved before they are offered as an in-stock item. Often, you will also save on shipping while not risking a rate item being sold out before you have a chance to buy it. Being the largest Airsoft distributor in the America continent, is the gateway for many exciting items entering the Airsoft world. All pre-order items are tagged with our best estimate on arrival times factoring in manufacture delay, us custom examinations and other factorys to the best of our ability. The goods on pre-order generally arrive before they are past due or on-time 99% of the time. All pre-order items are processed subject to item availability on a first-come, first serve basis. All orders and payments are processed at the time of payment. Buyer reserve the rights to a full refund on any pending pre-order items at any time.

This item is currently Out of Stock. Most out of stock items are restocked within 1-3 weeks. Some items may take longer. Please add this item to your wishlist to keep posted on its availability.