Rock River Arms AR0598.V1 LAR-15M All Terrain Hunter Complete Upper, 223 Wylde 18" Stainless Heavy Match Barrel, Black Rec/13" M-LOK Handgaurd, Operate Muzzle Brake

CALIBER:.223 WYLDE CHAMBER FOR 5.56MM AND .223 CALIBERUPPER RECEIVER:FORGED A4BARREL:18-INCH HEAVY MATCH STAINLESS STEEL, CRYOGENICALLY TREATED, 1:8 TWISTMUZZLE DEVICE:RRA OPERATOR MUZZLE BREAK / 1/228 THREADGAS BLOCK:LOW PROFILE GAS BLOCKHANDGUARD:RRA 13 INCH EXTENDED LIGHTWEIGHT FREE FLOAT RAIL, M-LOK COMPATIBLEINCLUDES:BOLT CARRIER GROUP AND CHARGING HANDLE ASSEMBLY.