King Arms COLT M4 CQB-R Gas Blowback Rifle


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King Arms COLT M4 CQB-R Gas Blowback Rifle 
Adjustable Power & Rate of Firing 
Crispy Metal Sounds & Smoother slide cycling 

COLT M4A1 Features: 
Cybergun Official Licensed Engrave Logos / Laser Markings throughout the gun 
COLT Metal Receiver (Easy Disassembly) 
CNC machined Aluminum Alloy RIS Rail System Handguard 
14.5inch Carbine Length Outer Barrel 
Package include 2x Rail Cover and fore-grip 
Front sight with sling swivel and adjustable steel front sight post 
Adjustable Steel Rear sight 
Round Per Second Adjustment 
Power Adjustment 

Package with 50 Rounds Gas Operated Magazine (Also compatible with WA / Pro-Win M4 GBB Magazine without modification - optional) 
There are two valve blockers included in this package, which one of them is already installed. 

To adjust power, simply switch between higher / lower power valve blocker, it offers power range 280FPS~450FPS 

King Arms GBB Rifle - Power Adjustment Valve Blocker

To adjust Rate of Fire, interchange four different sizes speed buffers to achieve your perference. (The thickest and thinnest buffers have been installed) By adding buffer, it reduce travel distance for the recoil spring, hence higher ROF can be achieved. 

King Arms GBB Rifle - ROF Adjustment Speed Buffers

Aluminum Made 14mm barrel extension tube 
Sling mount can be installed with any single, 2- or 3- point tactical sling
Item Weight (gram) 3000
Major Color Black
Length 695mm / 780mm (Extended)
Barrel Length ~240mm
Blow Back Yes
Hop-up Adjustable
Shooting Mode Semi/Fully Automatic
Magazine Capacity 50 Rounds
Bullet Type 6mm BB
Pistol Power Source HFC134a Gas
Power (Muzzle Velocity) 425 FPS (Top Gas Test @ 25°C Room Temperature)
Manufacturer King Arms
Package Includes
  • King Arms COLT M4 CQB-R Gas Blowback Rifle
  • 50 rounds Metal Gas Magazine
  • Original Box
1. This GBB Airsoft Gun assembly is extremely sophisticated. DO NOT attempt to dissemble the gun without consulting us. No Guarantee will be honored if the gun has been dissembled. 

2. HFC134a airsoft gas is recommended. Although HFC22 Green Gas/Top Gas can be used for this Gas Blow Back Gun, it is NOT RECOMMENDED because the internal mechanism is designed for HFC134a airsoft gas. It may not withstand the prolonged high pressure of higher power gas. Please note No Guarantee will be honored if the gun has been fired with HFC22 Green Gas/Top Gas.