CMMG Banshee Mk4 | 5.56 NATO | 12.5in | 30rd

The CMMG Banshee Mk4 is a compact AR-style pistol built to combine carbine-like ballistics with the maneuverability of a short-barrel platform. This example is chambered in .223 Rem/5.56 NATO, features a 12.5-inch threaded barrel, and ships with a 30-round magazine and a deployable RIP Brace. The handguard is CMMG’s EML11 M-LOK design and the package is finished in a bronze Creakote.

For optics, a red-dot sight such as the Vortex SPARC AR (a durable red-dot platform available well under $1,000) pairs well with the Mk4’s Picatinny footprint and short sight radius for fast target acquisition.

Typical applications for this configuration include precision short-range target work at the range and recreational competitive stages where a compact AR profile improves mobility.

Product Specifications

• The manufacturer is CMMG.
• The model is the Banshee Mk4.
• The caliber is .223 Rem/5.56 NATO.
• The barrel measures 12.5 inches.
• The action is Semi-Auto.
• The magazine capacity is 30 rounds.
• The package includes 1 magazine.
• The optic footprint is Picatinny.
• The handguard is a CMMG EML11 M-LOK design.
• The frame is made of aluminum and the grip is polymer.
• The finish is Creakote Midnight Bronze.
• The muzzle is threaded for 1/2-28.
• The gas system is a .750-inch carbine gas system.
• Other notable features include a CMMG Zeroed Trigger, zeroed pistol grip, RIP Brace and a zeroed linear muzzle device on a 4140 CM barrel.
• Shipping restrictions apply; no direct ship to Rhode Island or Washington, no sale to Illinois PICA, and no returns. The UPC is 810148624330 and the weight is listed as 92 ounces.

The Banshee Mk4 delivers a concentrated AR experience in a compact package with quality features—threaded barrel, full M-LOK handguard, and a deployable brace—making it a versatile option for users who need an efficient short-barrel platform. Its Picatinny top rail makes mounting a quality red dot straightforward, and the included components keep initial setup simple.

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