Cmmg Banshee 55Ac20Aab Mk4 556 12.5 Brc Arblk

The CMMG Banshee Mk4 5.56 AR pistol splits the difference between a rifle's reach and a handgun's handling. Built on CMMG's ultra-modular Mk4 platform, this 5.56x45mm AR pistol delivers carbine-length ballistic performance in a package that moves like a short-barreled rifle. The 12.5-inch barrel paired with a 1:7 twist gives you the velocity and stability of a full-sized carbine without the overall length, making it ideal for shooters who want rifle-class power in a compact, maneuverable platform. Whether you're setting up a truck gun, building a home-defense AR, or running drills at close quarters, the Banshee Mk4 bridges the gap between rifle and pistol seamlessly.

Every part of this AR pistol is purpose-built and accessible. The billet upper and forged lower receivers are matched to CMMG's ZEROED components throughout—ambi charging handle, drop-in single-stage trigger, safety selector, and grip—so you get a cohesive, refined trigger press and controls right out of the box. The M-LOK EML11 handguard gives you solid mounting options without bulk, and the RipBrace receiver extension provides a stable platform whether you're shooting supported or on the move. The included Magpul 30-round PMAG keeps your magazine and rifle from feeling like a mismatch.

Weighing 5.9 pounds and measuring 28 inches overall, the Banshee Mk4 is light and compact enough for one-handed carry yet balanced and controllable in a firefight. The direct-impingement system keeps maintenance familiar and simple, the carbine-length gas system is proven reliable, and the CMMG ZEROED linear compensator helps manage recoil and muzzle rise. Cerakote finish protects it against hard use and the elements. This is a modern AR pistol built for shooters who demand more than catalog specs—they want controls that work, ergonomics that make sense, and a platform that does what they ask of it.