The CMMG Banshee MK4 is a compact 9mm AR-style handgun built on the Mk4 platform. It features an 8″ threaded barrel, fixed-ejector radial delayed blowback operating system, and ships with a 30-round CMMG 9ARC magazine. The configuration and compact dimensions make it suitable for range use, competition in pistol-caliber classes, and practical short-range applications.
Key Specifications
- The caliber is 9mm Luger.
- The barrel measures 8 inches.
- The action is Semi-Auto (fixed ejector radial delayed blowback).
- The standard magazine capacity is 30 + 1.
- The barrel material is 4140CM SBN.
- The barrel twist rate is 1:10.
- The muzzle thread specification is 1/2 x 28.
- The upper receiver is Billet 6061 T6 Aluminum.
- The lower receiver is Mk4 Forged 7075 T6 Aluminum.
- The stock/brace is a CMMG RipBrace and the finish is Cerakote.
Compact, feature-rich, and built on a familiar AR platform, the Banshee MK4 offers practical ergonomics, ambidextrous controls, and a full complement of modern components in a small package. Its combination of an 8″ threaded barrel, M-LOK handguard, and high-capacity magazine provides a versatile tool for range routines and matched competition formats while maintaining straightforward manual-of-arms for experienced users.
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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