CMMG BANSHEE MK4 | 8″ Barrel | 32+1

The CMMG BANSHEE MK4 is a compact AR-style pistol built on CMMG’s modular Mk4 platform and fitted with CMMG ZEROED controls and accessories. Its medium-taper, threaded 8″ barrel and EML 11″ M-LOK handguard provide a balance of compact handling and accessory mounting options. The package includes a 32-round CMMG magazine and CMMG RipBrace for adjustable ergonomics.

For optics, a red-dot such as the Trijicon MRO or Holosun HS503G offers a durable, low-profile solution under $1000 that pairs well with the MK4’s sight radius and compact layout.

Applications: range and target practice, competition-style sport shooting.

Product Specifications

• The action is Semi-Auto.
• The capacity is 32 + 1 rounds using the included magazine.
• The barrel length is 8 inches with a medium taper and external threading.
• The barrel twist rate is 1:9.
• The barrel material is 4140CM SBN.
• The barrel contour is MT (medium taper).
• The muzzle device is a CMMG ZEROED Linear Comp.
• The muzzle thread pattern is 1/2 x 28.
• The handguard is a CMMG EML11 M-LOK with full-length M-LOK slots on the sides and bottom and M-LOK between top Picatinny sections.
• The upper receiver is Billet 6061 T6 Aluminum.
• The lower receiver is a Mk4 Forged 7075 T6 Aluminum lower.
• The included magazine is a CMMG 32rd magazine.
• The finish is Cerakote Standard (Black Armor).
• The stock/brace configuration is a CMMG RipBrace with a 6-position Fastback extension.
• The UPC is 810148624095.

This BANSHEE MK4 brings CMMG’s modularity and ZEROED ergonomic components to a compact AR-style pistol platform. Its threaded 8″ barrel and M-LOK handguard support a wide range of accessory layouts while the included 32-round magazine delivers extended capacity. Whether setting up a dedicated range rig or configuring a competition setup, the MK4’s component-level approach makes upgrades and customization straightforward.

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