CMMG Banshee Mk4 Features The CMMG Banshee Mk4 runs a fixed ejector radial delayed blowback operating system purpose built for 9mm cycling smoothly and reliably from a 5 inch barrel with a 1:10 twist rate. The billet 6061 T6 aluminum upper receiver pairs with a forged 7075 T6 aluminum Mk4 lower giving the platform a rigid precisely machined foundation. A ZEROED RBB brake threaded to 1/2x28 helps tame muzzle rise while the ZEROED ambi pistol grip and ZEROED drop in trigger give the shooter consistent repeatable control. The ZEROED 60/90 degree safety selector rounds out a build where nearly every control has been refined by CMMG s own engineering team. The new EML4 M-LOK handguard adds M-LOK slots at the 3 6 and 9 o clock positions along with a full length Picatinny top rail giving the shooter flexible mounting for lights lasers and optics plus an integrated handstop for control. The B5 Systems Bravo Stock deploys quickly and folds down the CMMG 6 position Fastback extension for a compact travel length. Finished entirely in a bronze cerakote coating the Banshee Mk4 combines corrosion resistance with a look that stands apart from a typical black rifle. Weighing just 4.3 pounds and measuring 20.8 inches overall this Banshee is a genuinely maneuverable 9mm SBR built for personal defense. CMMG Banshee Mk4 Specifications Manufacturer: CMMG Model: Banshee Mk4 Type: Semi-Auto SBR Caliber: 9mm Barrel Length: 5 Twist Rate: 1:10 Operating System: Fixed Ejector Radial Delayed Blowback Capacity: 30 Rounds Upper Receiver: Billet 6061 T6 Aluminum Lower Receiver: Mk4 Forged 7075 T6 Aluminum Handguard: CMMG EML4 M-LOK Stock/Brace: B5 Systems Bravo Stock Muzzle Device: ZEROED RBB Brake Thread Pattern: 1/2x28 Finish: Bronze Cerakote Weight: 4.3 lbs Overall Length: 20.8 Available At: GrabAGun