CMMG 33B430C-AB Banshee MK3 8.6Blackout 12.50" Black Armor Cerakote Receiver for AR-Platform

The CMMG 33B430C-AB Banshee MK3 8.6 Blackout 12.50" upper receiver is purpose-built for operators who demand subsonic suppressed performance without compromise. This AR-platform receiver assembly is engineered for law enforcement, military, and civilian shooters requiring a dedicated short-barreled rifle platform optimized for the 8.6 Blackout cartridge. The Banshee series represents CMMG's evolution in compact, hearing-safe rifle design—delivering the terminal ballistics of a full-power rifle cartridge while maintaining hearing-safe subsonic velocities with quality ammunition and an integrated suppressor.

The 12.50-inch barrel strike length provides superior velocity retention and downrange energy compared to shorter PDW designs, while remaining compact enough for vehicle operations, breach entry, and confined-space tactics. Black Armor Cerakote finishing provides superior corrosion resistance and durability in harsh field conditions—essential for duty weapons exposed to moisture, salt, and extreme temperature cycling. The receiver accepts standard AR-platform magazines and components, allowing operators to leverage existing inventory and training while upgrading to a specialized platform. The Banshee MK3 upper is fully compatible with mil-spec lower receivers, enabling rapid configuration changes and modular deployment strategies.

This upper receiver excels in tactical applications where noise discipline and hearing protection matter—especially CQB, aircraft security, vehicle defense, and training environments. Operators pairing this receiver with a quality suppressor and 8.6 Blackout ammunition achieve subsonic performance that rivals integrally suppressed rifles while maintaining modularity. Installation requires standard AR-15 tools and armorer-level knowledge; the receiver drops onto any mil-spec AR lower, making integration straightforward for experienced shooters. The 5.14-pound receiver weight keeps the complete rifle system under 8 pounds—optimal for tactical mobility without sacrificing shootability or control.