18″ Mark 12 Mod 0 SPR Gen II Upper in 5.56 Cal. 1-8 Twist
This Mark 12 Mod 0 Retro Gen II, ready to shoot 5.56 upper is equipped with a 18″ Douglas 416 stainless steel barrel 1-8 twist with a fitted bolt and commercial carrier, flat-top receiver, PRi flip up front gas block front sight with thumb screw elevation adjustment and rear sight, rifle length gas tube, a Gas Buster charging handle with big latch, and a AE inc brake and collar. The system also comes with a Gen II Rifle length carbon fiber free float forearm and a full length Picatinny top rail. This upper comes is available in black or FDE finishes. Please allow 5~10 days for assembly and testing prior to shipping.
Specifications:
- Caliber: 5.56/.223
- Upper: Forged T6 7075 Hard Coat
- Barrel: 18″ 5.56 Douglas 416 stainless steel with M4 feed ramps 1-8 twist
- Gas Block: Flip up front sight gas block with 2 cross bolts for securing
- Forearm: Rifle Length Finish
- BUIS: Rear sight provided that works with gas block sight
- Muzzle Brake: 1/2×28 Threaded AE Brake and Collar
- OAL: 27″
- OAW: 5.2 LBS










