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

The CMMG Banshee MK4 300 Blackout 30+1 8-inch medium taper threaded barrel with black nitride finish delivers optimized performance in subsonic suppressed applications and short-barrel supersonic configurations. This compact platform combines a Black Armor Cerakote aluminum Picatinny rail receiver with purpose-built ergonomics, making it a proven choice for operators requiring reduced footprint without sacrificing modularity or reliability in demanding environments.

The 8-inch medium taper barrel threads to accommodate suppressors, critical for mitigating sound signature in tactical and training scenarios where noise discipline matters. The EML 7-inch M-LOK handguard features full-length slots on both sides and bottom, plus M-LOK sections between top Picatinny rail sections, enabling rapid accessory configuration for optics, lights, and vertical grips. CMMG's ZEROED parts suite—including the pistol grip, drop-in trigger, 60/90-degree ambidextrous safety, linear compensator, ambidextrous mag catch, extended mag release, ambidextrous charging handle, and bolt catch—accelerates setup and enhances operational efficiency. The 30+1 capacity uses standard .300 Blackout magazines.

Purpose-built for precision riflemen, special operations personnel, and serious shooters prioritizing suppressed fire capability, this platform excels in close-quarters and medium-distance work. The short barrel and threaded design make it ideal for shooters running suppressors while maintaining ballistic performance in 300 Blackout's subsonic and supersonic load envelopes. Weighing 9.6 pounds and measuring 39.6 inches in overall length, the MK4 delivers controllable handling in confined spaces without excessive muzzle blast or recoil signature.

The 300 Blackout cartridge has become the standard for suppressed rifle work, offering subsonic ammunition that cycles reliably in semi-automatic platforms while maintaining duty-grade energy levels. The Banshee MK4's barrel length and receiver design maximize velocity and accuracy from both subsonic and supersonic loadings, providing flexibility across training, tactical, and hunting applications where sound and blast management are operational requirements.