Rock River Arms 450 Bushmaster CM Mid A4 Upper Half 16 Barrel 13 FF Rail
CALIBER:.450 BUSHMASTERUPPER RECEIVER:FORGED A4BARREL:16 INCH CHROME MOLY, 1:24 TWISTMUZZLE DEVICE:RRA OPERATOR BRAKE, 5/8-32 THREADGAS BLOCK:LOW PROFILE GAS BLOCK, MID-LENGTH GAS SYSTEMHANDGUARD:RRA 13 INCH EXTENDED LIGHTWEIGHT FREE FLOAT RAIL, M-LOKA(R) COMPATIBLEINCLUDES:BOLT CARRIER GROUP, CHARGING HANDLE ASSEMBLY AND ONE 5 ROUND MAGAZINE
