The CMMG BANSHEE Mk4 is a compact AR-style pistol chambered in .223 Rem/5.56 NATO and built on CMMG’s modular Mk4 platform. With a 10.5″ barrel and RipBrace, it balances carbine-style ballistics with a maneuverable overall package for short-range, compact applications. The pistol is configured with an EML9 M-LOK handguard, Picatinny optic footprint, and CMMG ZEROED controls and trigger components.
Key Specifications
- The manufacturer is CMMG.
- The model is BANSHEE MK4.
- The caliber is .223 REM/5.56 NATO.
- The barrel length is 10.5000 inches.
- The action is Semi-Auto.
- The magazine capacity is 30 rounds.
- The barrel material is 4140 CM.
- The handguard is CMMG EML9 M-LOK.
- The stock/brace is a CMMG RipBrace pistol brace.
- The unloaded weight is 88 ounces (5.5 lbs).
This BANSHEE Mk4 is designed for users who need a compact, highly modular AR pistol that maintains familiar AR ergonomics and parts compatibility. Equipped with CMMG ZEROED controls, a threaded barrel with 1/2-28 muzzle threads and a linear muzzle device, and full M-LOK coverage on the handguard, it provides a ready baseline for optics and accessory integration. The configuration is suitable for compact transport, vehicle or pack carry, and any user seeking the handling of a shortened AR-platform pistol without sacrificing common part compatibility.
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.
Related Videos:




