CMMG Banshee MK4 9mm | 8″ Barrel | 30+1 | 94A860F-AB

The CMMG Banshee MK4 is a compact AR-platform 9mm pistol built on the Mk4 lower and designed for the shortest 9mm barrel CMMG offers. It pairs an 8″ barrel, CMMG 9ARC 30-round magazine compatibility, and a RipBrace pistol brace in an Armor Black Cerakote finish. The EML4 M-LOK handguard and ambidextrous controls provide an ergonomic, compact handling package.

For optics, a reliable red-dot such as an Aimpoint PRO is a practical match for this platform and stays well under the $1,000 limit for quality pistol optics. Typical use cases include range training and practical pistol competition where compact handling and high-capacity 9mm performance are desirable.

Product Specifications

• The manufacturer is CMMG.
• The model is Banshee MK4.
• The caliber is 9mm Luger.
• The barrel measures 8 inches.
• The barrel twist is 1:10.
• The barrel material is 4140CM SBN.
• The muzzle device is a CMMG ZEROED Linear Comp.
• The muzzle thread is 1/2 x 28.
• The operating system is Fixed Ejector Radial Delayed Blowback.
• The upper receiver is Billet 6061 T6 Aluminum.
• The lower receiver is Mk4 Forged 7075 T6 Aluminum.
• The handguard is a CMMG EML4 M-LOK.
• The stock/brace is a CMMG RipBrace.
• The magazine included is a CMMG 9ARC 30rd for a 30 + 1 capacity.
• The finish is Cerakote Standard Armor Black.
• The product UPC is 840442503826.

This Banshee MK4 is built to deliver compact, high-capacity 9mm performance in a familiar AR-pattern manual of arms. Its short 8″ barrel, M-LOK handguard, and ambidextrous controls make it well suited to precision-focused range work and practical competition formats where a compact, fast-handling 9mm platform is preferred. The included RipBrace and ergonomic controls help maintain control and repeatability in rapid strings of fire while the CMMG ZEROED trigger and ambidextrous charging handle improve usability.

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