PRI AR-15 Mark 12 Mod 0 SPR Upper Receiver Assembly 5.56x45mm 18″ Barrel

Forged Upper Receiver T6 7075 Hard coat anodized aluminum
Douglas 416 stainless steel 18″ Barrel with M4 feed ramps
Flip up front sight gas block with 2 cross bolts for securing
Rifle Length Forearm with Black or FDE Finish
SPR Straight Fully Length Picatinny Top Rail with SPR PEQ II Removable Rail Section
Rear Sight designed for the gas block
1/2″x28 Thread with OPS Muzzle Brake and Collar
Overall Length of 27″
Only 5.2 Pounds