CALIBER:5.56MM NATO CHAMBER FOR 5.56MM AND .223 CALIBER LOWER RECEIVER:FORGED RRA LAR-15 UPPER RECEIVER:EXTRUDED ALUMINUM A4 WITH PORT DOOR/NO FORWARD ASSIST BARREL:16-INCH CHROME MOLY MUZZLE:A2 FLASH HIDER / 1/2–28 THREAD GAS SYSTEM:CAR LENGTH, WITH LOW PROFILE GAS BLOCK TRIGGER:RRA SINGLE STAGE TRIGGER HANDGUARD:CAR-LENGTH FREE-FLOATED ALUMINUM WITH MS1913 TOP-RAIL, M-LOK™ COMPATIBLE BUTTSTOCK:RRA SIX-POSITION TACTICAL CAR STOCK PISTOL GRIP:A2 GRIP WEIGHT:6.25 POUNDS LENGTH:36 INCHES STOCK EXTENDED FINISH:VEIL ALPINE CAMO FINISH INCLUDES:ONE RRA 30 ROUND POLYMER MAGAZINE, MANUAL AND WARRANTY INFORMATION