CMMG 30AF20AMB Banshee MK4 .300 Blackout 8" 31-Round Threaded Barrel Pistol

The CMMG 30AF20AMB Banshee MK4 300 Blackout pistol is a short-stroke, piston-driven platform engineered for suppressed operations and subsonic loadings. Built around a compact 8-inch black nitride medium taper threaded barrel, this system delivers consistent reliability in configurations ranging from hearing-safe subsonic ammunition to full-velocity supersonic rounds. The threaded muzzle accepts industry-standard suppressors and muzzle devices, making it a preferred choice for operators seeking integrated sound mitigation without sacrificing modularity.

The handguard is a 7-inch EML M-LOK rail system with full-length M-LOK slots on both sides and the bottom, plus additional M-LOK positions between top Picatinny rail sections. This layout supports tactical accessory mounting without rail conflicts—lights, laser designators, and vertical grips can be positioned for optimal ergonomics in tight spaces. The midnight bronze Cerakote aluminum Picatinny rail receiver provides corrosion resistance while maintaining visual distinction. CMMG zeroed grip modules ship pre-fitted, reducing setup time. Total weight of 4 pounds keeps the platform nimble for CQB drills and vehicle operations.

This configuration suits precision shooting teams, breach specialists, and law enforcement units where subsonic capability and modular accessory integration are operational requirements. The 300 Blackout cartridge excels at short ranges with suppressors—typical subsonic loads generate subsonic velocities (below 1,125 fps) while heavier projectiles maintain energy transfer. Home defense, tactical training, and dedicated suppressed platforms represent primary use cases. The pistol format (under 16-inch barrel) enables efficient handling in confined spaces without requiring NFA registration as a short-barreled rifle when maintained as a pistol.

CMMG's piston-driven architecture distinguishes the Banshee from direct-impingement competitors by reducing carrier tilt and extending component longevity under sustained fire. The 300 Blackout cartridge has become the standard for suppressed precision work across federal and state agencies, favoring accuracy and hearing conservation over maximum velocity. When evaluating subsonic platforms, end users should confirm suppressor compatibility and ammunition selection before duty deployment.