CMMG Banshee MK4 Features The CMMG Banshee MK4 runs a direct impingement operating system through a 10.5 inch 4140CM barrel with SBN treatment and a 1:7 twist rate giving it the stabilization needed for a wide range of 5.56 bullet weights. The CMMG ZEROED linear compensator threaded at 1/2x28 helps redirect muzzle gas forward reducing felt recoil and muzzle rise during rapid strings of fire. An adjustable .750 inch gas block paired with a carbine-length gas system lets the operator tune reliability to different ammunition and suppressor setups. The billet 6061 T6 aluminum upper and forged 7075 T6 aluminum lower provide a strong precisely machined foundation for the entire system. Furniture on this build includes a CMMG EML9 M-LOK handguard for mounting lights optics and other accessories along with a six-position CMMG Fastback receiver extension topped with a B5 Systems Bravo stock for a stable adjustable cheek weld. The CMMG ZEROED ambidextrous charging handle and ZEROED pistol grip are built for use by right- and left-handed shooters alike and the ZEROED drop-in trigger offers a cleaner break than many stock AR triggers. Finished entirely in Flat Dark Earth Cerakote the rifle presents a cohesive field-ready look. Weighing 5.6 lbs and measuring 26.4 inches overall this Banshee MK4 ships with a 30-round magazine for shooters seeking a compact dependable SBR for sale at GrabAGun. CMMG Banshee MK4 Specifications Manufacturer: CMMG Model: Banshee MK4 Caliber: 5.56 Capacity: 30 Rounds Barrel Length: 10.5 Barrel Twist: 1:7 Barrel Material: 4140CM SBN Operating System: Direct Impingement Muzzle Device: CMMG ZEROED Linear Compensator Muzzle Thread: 1/2x28 Gas System: Adjustable .750 Gas Block Carbine Length Upper Receiver: Billet 6061 T6 Aluminum Lower Receiver: Forged 7075 T6 Aluminum Handguard: CMMG EML9 M-LOK Color: Flat Dark Earth Cerakote Charging Handle: CMMG ZEROED Ambi Pistol Grip: CMMG ZEROED Stock: B5 Systems Bravo Trigger: CMMG ZEROED Drop-In Safety Selector: CMMG ZEROED 60/90 Degree Optics Ready: Picatinny Rail Weight: 5.6 lbs Overall Length: 26.4 Available At: GrabAGun