R GUNS 10.5'' HB A3 UPPER ASSEMBLY

R GUNS A3 FORGED RECEIVER MIL-SPEC HARD COAT ANODIZED 10.5″ 5.56X45mm NATO 1/9 TWIST WITH M4 FEED RAMPS NATIONAL MATCH GRADE BARREL TURNED TO CENTER STRESS RELIVED POLISHED CHAMBER MPI AIR GAUGED BARREL M-LOCK FREE FLOAT HAND GUARD YHM FLIP UP FRONT SIGHT A2 FLASH HIDER COMPLETE WITH BOLT ASSEMBLY AND CHARGING HANDLE