The CMMG Banshee MK4 is a compact AR-platform pistol chambered in .338 ARC. It pairs a 10.50-inch nitride-treated barrel with Mk4 ZEROED components and a RipBrace pistol brace for compact handling and modularity. The pistol is finished in Cerakote and configured with ambidextrous controls suitable for right- or left-handed operation.
Key Specifications
- Chambering is .338 ARC as specified by the manufacturer.
- The barrel measures 10.50 inches and is listed with a nitride finish.
- The action is Semi-Auto consistent with the AR-platform configuration.
- The barrel twist rate is 1:8 for the specified caliber.
- The barrel material and finish are listed as 4140CM with a nitride finish.
- The muzzle thread specification is 5/8 x 24.
- The gas port location is listed as pistol to suit the short-barrel gas system.
- The upper receiver is a Mk4 billet 6061 T6 aluminum component.
- The lower receiver is a Mk4 forged 7075 T6 aluminum component.
- The unloaded weight is listed as 5.60 lbs and the overall length is 26 inches.
This Banshee MK4 configuration pairs compact dimensions with Mk4 ZEROED components and an M-LOK handguard for modular accessory placement. The build reflects CMMG’s AR-platform approach with billet and forged receiver components, ambidextrous controls, and a RipBrace pistol brace for stabilized one-handed or two-handed operation.
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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