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King Arms Colt Licensed M4 Airsoft Gas Blowback Rifle (Model: M4A1)

ID: 33960 (GR-KA-M4A1)
KAGBB01 - 180552
Cybergun / Spartan Mil/LE806481185522KAGBB01 - 18055233960
4.5 stars, based on 15 reviews
King Arms Colt Licensed M4 Airsoft Gas Blowback Rifle (Model: M4A1)
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Rail system, optic, PEQ box, and vertical grip sold separately
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Cybergun / Spartan Mil/LEKing Arms / Eagle Force


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  • Fully licensed Colt trademarks molded into the receiver
  • M4A1 style layout with detachable carry handle and fixed sights
  • High power gas system is compatible with Western Arms style M4 GBB parts
  • Railed upper receiver, great for optics
  • Retractsable Crane style stock
  • Compatible with most G&P and Western Arms parts, making the upgrade potential nearly limitless
  • Highly realistic Gas Blowback system

Manufacturer: King Arms (Licensed by Colt)

FPS Range: 330-380

Color: Black


Length: 770mm-850mm, Adjustable
Weight: 2400g
Inner Barrel: 368mm
Magazine Capacity: 49rds. Works with King Arms and other compatible M4 / M16 Series Airsoft GBB Magazines
Thread Direction: 14mm Negative
Gas Type: Green Gas, Red Gas, Propane
Fire Modes: Semi/Full-Auto, Safety
Package Includes: Gun, Magazine, Manual
Hopup: Yes, Adjustable

About Cybergun / Spartan Mil/LE

Cybergun is the world leader in designing and distributing replica dummy weapons for video game aficionados, sport or outdoor shooting, and collectors.

About King Arms / Eagle Force

King Arms was founded in 2004 with the mission to ensure optimum customer satisfaction by providing precision products and outstanding service. In 2015, we moved our headquarters from Hong Kong to Taiwan where we've continued to provide excellent products with the highest quality. While working with leading firearms manufactures, we provide to our customers a level of innovation and authenticity that can't be found anywhere else in the Airsoft industry. This goal is what continuously drives us to improve and gives us purpose.

15 Customer Reviews

(Write a review)

by Patrick W. on 10/10/2017
"Okay. So I just received this rifle this morning. It comes with a large and small spring buffer, already installed; I took out the large and left the small in place for a realistic ROF and to enable the bolt lock. Also included are a magazine and basic speed loader.

As someone who has owned several high-end AR-15s, this GBB is the perfect airsoft weapon. 1:1 scale, aluminum receivers, carry handle and iron sights. It was like Christmas came early. Checked out the internals for any possible issues, found absolutely none whatsoever. This rifle has very tight tolerances. The magazine fits very tight in the magwell and definitely needs to be broken in. Weapon manipulation is just like the real thing and extremely satisfying.

As far as the magazine is concerned, it performs flawlessly. No leaks at all. I was skeptical of it after reading several poor reviews, however after testing it I am extremely happy and confident in using it.

I tested it outside, this afternoon, about 15 minutes ago. It was about 68 degrees and cool out. Fed it 5 magazines with .20s to test its reliability and accuracy. It is amazing right out of the box...I had only 1 jam on full auto, which was easily cleared in under 5 seconds. Accuracy is wonderful and I plan on further testing its capabilities. The fun switch and recoil is utterly amazing, and is quite the guilty pleasure!!!

I highly recommend this rifle!!! It is perfection, especially with the Colt licensing and trades; absolutely gorgeous...I'm am planning on upgrading the externals to either a SOPMOD Block I or II kit, not sure which yet...

"God made all men, but Samuel Colt made all men equal."
by Matt B. on 08/08/2017
"This is a great looking GBB Rifle with the best looking marking on the whole-wide world on it! COLT!!

Western Arms / G&P System - Easy to find spare parts and lots of upgrade parts
Bolt locks when mag empty
Easy to find spare mags
As real as it gets!
Good gas compression.


As a GBB nerd, I highly recommend this!
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

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