Designed specifically for use in AR15/M4 firearms like the BANSHEE Mk4 .300 BLK not only provides ballistic performance that rivals its Russian 7.62×39 counterpart .300 BLK excels in subsonic and suppressed applications above other common calibers as well. Best of all since this BANSHEE is built on the CMMG® Mk4 AR15 platform customization and upgrades like Drop-In Triggers are only limited by your imagination. The BANSHEE series represents the most innovative AR pistols and SBRs available today. From the quick deploying RIPBRACE® to the stylized receivers and EML handguards every BANSHEE is tailor-made to be the personal defense weapon you can always depend on. With full-length M-LOK® slots on both sides and the bottom of the handguard as well as M-LOK between the top Picatinny rail sections you’ll always have enough space for those must-have accessories. Platform: Mk4 – Caliber: .300 BLK – Operating System: Direct Impingement – Barrel Length: 12.5 – Barrel Twist: 1:7 – Barrel Contour: MT – Barrel Material: 4140CM SBN – Barrel Twist: 1:7 – Muzzle Device: CMMG ZEROED Linear Comp – Muzzle Thread: 5/8 X 24 – Gas Port Location: Pistol – Gas Block: 0.750 Non-Adjustable – Upper Receiver: Billet 6061 T6 Aluminum – Lower Receiver: Mk4 Forged 7075 T6 Aluminum – Hand Guard: CMMG EML11 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: CMMG ZEROED Trigger Guard – Safety Selector: CMMG ZEROED 60/90 Degree – Magazine: Magpul 30rd PMAG – Weight: 5.8 lbs – Length: 28