The CMMG Banshee MK4 is a compact AR-pattern pistol chambered in .300 AAC Blackout with an 8″ threaded barrel. Built on CMMG’s Mk4 platform, it comes equipped with ZEROED components and a short EML M-LOK handguard for accessory mounting. The design targets short-barrel and suppressed applications while maintaining familiar AR ergonomics and controls.
Key Specifications
- Chambered in .300 AAC Blackout.
- Barrel length is 8 inches, with a medium taper contour.
- Barrel twist rate is 1:7.
- Barrel material is 4140CM SBN.
- Features a threaded muzzle with 5/8×24 threads and includes a CMMG ZEROED linear compensator.
- Handguard is a CMMG EML7 7-inch M-LOK style for modular accessory placement.
- The upper is Billet 6061 T6 Aluminum and the lower is Mk4 Forged 7075 T6 Aluminum.
- Action is Semi-Auto with a direct impingement operating system.
- Includes a 30-round Magpul PMAG as the supplied magazine.
- Finished in Cerakote Armor Black with ambidextrous ZEROED controls.
Compact, well-equipped, and purpose-built for short-barrel use, the Banshee MK4 brings CMMG’s ZEROED parts and solid receiver construction into a concise AR-format pistol. Its threaded barrel and full M-LOK handguard make it adaptable for a range of accessory configurations where lawful, practical use and modularity are priorities.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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