The CMMG Banshee MK4 in 300 Blackout is engineered for compact performance within the AR15 platform. This configuration leverages the intrinsic capabilities of the .300 BLK cartridge, delivering a high-utility firearm for various applications where maneuverability and effective terminal ballistics are critical. The Banshee MK4 system integrates CMMG’s proprietary components to ensure reliable operation and precise handling.
Key Features
Optimized .300 Blackout Integration
Designed around the .300 BLK cartridge, this Banshee MK4 variant is specifically configured to maximize ballistic efficiency and operational reliability within the AR15-pattern firearm. The 12.50-inch medium taper threaded barrel, finished in Black Nitride, provides durability and corrosion resistance while offering compatibility with various muzzle devices or suppressors.
Robust Construction and Finish
The receiver assembly features a Black Armor Cerakote finish on its aluminum construction, providing enhanced resistance to abrasion, corrosion, and chemical exposure. This protective coating ensures long-term operational integrity in demanding environments.
Enhanced Control and Ergonomics
This platform integrates a comprehensive suite of CMMG ZEROED components. This includes a ZEROED pistol grip for positive retention, a responsive drop-in trigger for consistent shot activation, a 60/90-degree ambidextrous safety selector for adaptable manipulation, and a ZEROED linear compensator (optimized for .308 Win, but functional for .300 BLK) to mitigate muzzle blast. Further enhancements include a Mk47 ambidextrous charging handle for efficient manipulation and an AR15 polymer dust cover for bore protection.
Advanced Handguard System
The EML 7-inch M-LOK handguard provides a robust interface for accessory attachment. It features full-length M-LOK slots along the sides and bottom, alongside M-LOK compatibility between the top Picatinny rail sections, enabling flexible mounting solutions for lights, lasers, and other mission-essential equipment.
Technical Specifications
- Model: CMMG 30AB20FAB Banshee MK4
- Caliber: 300 Blackout
- Magazine Capacity: 30+1 Rounds
- Included Magazine: One 30-round Magpul magazine
- Barrel Length: 12.50 inches
- Barrel Material: Steel, Black Nitride Finish
- Barrel Profile: Medium Taper, Threaded
- Receiver Material: Aluminum
- Receiver Finish: Black Armor Cerakote, Picatinny Rail
- Handguard: EML 7″ M-LOK Handguards
- Grips: CMMG ZEROED Pistol Grip
- Trigger: CMMG ZEROED Drop-In Trigger
- Safety: CMMG ZEROED 60/90 Degree Ambidextrous Safety
- Muzzle Device: CMMG ZEROED Linear Compensator (.308 Win / .300 BLK)
- Charging Handle: CMMG ZEROED Mk47 Ambidextrous Charging Handle
- Dust Cover: AR15 Polymer Dust Cover
- SKU: TSW|166436









