UPPER - Cobalt Receiver/Slick Side (7075-T6 Billet) - Cobalt Handguard & Jam Nut- 7 Sided M-Lok Flared Inset for Suppressor 4 QD Mounts - Barrel- 12.5 1:7 Twist 5.56 NATO - Gas Block- Adjustable - Carbine-Length Gas System - BCG- Nitride - Cobalt Brass Deflector - Charging Handle- Ambi US Made T6 Aluminum - Mil Spec Dust Cover - Cobalt Pro Linear Compensator - LOWER - Cobalt Lower Receiver (7075-T6 Billet) - Cobalt Trigger Guard - Cobalt Short Throw Ambi Safety Assembly - Cobalt Kinetics Bolt Catch - Ambi Magazine Catch (Low Profile) - KE Arms DMR Trigger- Adjustable Single Stage 3.5-4.5 lbs - Cobalt Modified Mil Spec Buffer Tube - Cobalt Patented Buffer System - Mil Spec Takedown Pins and Detents - SB Tactical SBA3 Brace - Hogue Grip - Mil Spec End Plate and Castle Nut