Description
The CQBR Block II Upper features a 10.3 in (262 mm) length 4150 Barrel (similar to the Colt Commando short-4150 Barreled M16 variants of the past) which makes the weapon significantly more compact, thus making it easier to use in, and around, vehicles and in tight, confined spaces. The Block II was a free floated quad without the FSB.
Features:
- Manufacturer: B. King’s Firearms
- Model: M4A1
- Caliber: 5.56 Nato
- Length: 10.3″ Crane Spec 4150 Barrel
- Classification: SBR or Pistol
Includes:
- BKF M4A1 Assembled Upper Receiver
- BKF 10.3″ (Crane Spec) 5.56 Nato Carbine Length 4150 CMV 1/7 Twist Chrome Lined Phosphate 4150 Barrel W/ Pinned .750 Nitride Gas Block
- BKF Carbine Length Gas Tube
- Midwest Industries Combat Rail T-Series Free Float Handguard 9.50″ Length Quad Rail
- BKF A2 Muzzle Devise
- NO BCG OR CHARGING HANDLE INCLUDED
PRODUCT SKU: BKF-CUR-M4A1-MK18-BLOCK2










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