CMMG 54AE10FAB Banshee MK4 11" 33-Round Threaded Barrel Carbine

The CMMG Banshee MK4 11" 33-Round Threaded Barrel Carbine (SKU 166425) represents a purpose-built platform for shooters who demand compact, modular performance without compromising magazine capacity or firepower. Originally developed for law enforcement and military applications requiring reduced noise signatures and controllable recoil, this .45 ACP carbine delivers consistent ballistics in a form factor that excels in close-quarters and vehicle-mounted scenarios. The 33-round capacity bridges the gap between pistol and rifle-class engagement, making it ideal for duty applications, home defense, and precision pistol-caliber competition.

Built on CMMG's proven direct-blowback operating system, the Banshee MK4 delivers mechanical reliability without carrier tilt or accelerated wear common to piston-driven designs. The 11-inch threaded barrel accommodates a suppressor for mission flexibility—critical in law enforcement entries and tactical operations where noise and flash discipline matter. Weighing 9.4 pounds and measuring 39.5 inches overall, this carbine balances maneuverability with shooter control; the longer sight radius (compared to pistols) and rigid stock platform reduce follow-up shot time and improve accuracy beyond 25 yards. The modular upper/lower design allows attachment of standard AR-pattern optics, lights, and rail accessories, ensuring compatibility with your existing duty or training inventory.

This platform benefits tactical operators, armored vehicle crews, and shooters who maintain .45 ACP supply chains for consistency across weapons systems. Law enforcement units running pistol-caliber carbines for vehicle storage appreciate the Banshee's low recoil and compact profile in tight compartments. Home defenders gain a highly controllable, low-penetration option suitable for inhabited structures. Installation of optics and suppressors is straightforward via standard AR-pattern mounts and the 1/2x28 threaded muzzle, requiring no gunsmithing. Feeding remains reliable with .45 ACP ammunition across commercial and match-grade loads, ensuring compatibility with duty and recreational shooting regimens.