The Close Quarter Battle Receiver (CQBR) is a replacement upper receiver for the M4A1 Carbine.
The CQBR replaces the M4 with a barrel 10.3 in (262 mm) length, making it the modern equivalent
of the Colt Commando short-barrel M16 variants of the past.

Close Quarter Battle Receiver

Type: Assault rifle
Place of origin: United States of America
Service history:
In service: 2000-present
Production history:
Designer: Colt Defense
Designed: 1999
Produced: 2000-present
Number built Approx. >10,000
Specifications: (CQBR)
Weight: 2.7 kg (5.95 lb)
Length: 743 mm (29.3 in) stock extended
667 mm (26.3 in) stock retracted
Barrel length: 262 mm (10.3 in)
Cartridge: 5.56x45mm NATO
Action: Gas-operated, rotating bolt
Muzzle velocity: 800 m/s (2,625 ft/s)
Effective range: 300 m (328 yd)
Feed system: 20 or 30-round STANAG detachable box magazine

CREDITS:
Model by Infinity Ward
Converted to GTA SA by GaryMacTavish/Salva
Converted to GTA IV and EFLC by CORE.MAX2010
Player model by ac.amir
Big Thanks to Coltmaster1911 who made the WONDERFULL weapons conversion video