Features: Platform: MkGs Caliber: 9mm Luger Operating System: Fixed Ejector Radial Delayed Blowback Barrel Length: 5 Barrel Twist: 1:10 Barrel Contour: MT Barrel Material: 4140CM SBN Barrel Twist: 1:10 Muzzle Device: CMMG ZEROED Linear Comp Muzzle Thread: 1/2 X 28 Gas Port Location: N/A Gas Block: N/A Upper Receiver: Billet 6061 T6 Aluminum Lower Receiver: MkGs Forged 7075 T6 Aluminum Hand Guard: CMMG EML4 M-LOK Finish: Cerakote Standard Charging Handle: CMMG ZEROED Ambi Pistol Grip: CMMG ZEROED Pistol Grip Buffer Type: Carbine Receiver Extension: CMMG 6 Position Fastback Extension Stock / Brace: CMMG RipBrace Trigger Type: ZEROED Drop-In Single Stage Trigger Guard: Integrated Safety Selector: CMMG ZEROED 60/90 Degree Magazine: Glock 33rd Weight: 4.9 lbs Length: 23.7"