CMMG Banshee Mk4 | 5.56mm | 12.5″ Barrel | 30rd

The CMMG Banshee Mk4 is an AR-style pistol configured to deliver compact handling while preserving carbine-length ballistics. This example is chambered in 5.56mm and features a 12.5″ barrel with 1/2×28 threading and a 30-round magazine for extended on-gun capacity. Built on CMMG’s Mk4 platform with EML handguard and full-length M-LOK slots, it is designed for modularity and accessory mounting.

For optics, a Vortex Strike Eagle 1-6×24 is a capable, all-purpose choice under $1000 that pairs well with the Banshee’s profile for fast target acquisition at close to intermediate ranges.

Product Specifications

• The manufacturer is CMMG.
• The model is the Banshee Mk4 Handgun.
• The cartridge/chambering is listed as 5.56mm.
• The included magazine capacity is 30 rounds.
• The barrel length is specified as 12.5 inches.
• The barrel thread pattern is 1/2×28.
• The finish/color is listed as black.
• The handguard type is an EML handguard with full-length M-LOK slots and M-LOK sections between top Picatinny rail segments.
• The platform is the Mk4 ultra-modular design.
• The product description notes the receiver styling as stylized receivers for the BANSHEE series.
• The listing weight is 4.5.
• The product category is AR Pistols.
• The package includes a 30-round magazine as indicated in the product name.
• The UPC is 810144722993.

The Banshee Mk4 presents a compact AR-style package that emphasizes modularity and accessory compatibility. Its 12.5″ threaded barrel and full M-LOK handguard make it straightforward to configure for a range of field roles, and the Mk4 platform supports upgrades as needs evolve. For users seeking a compact, configurable pistol with carbine-oriented ballistics, this CMMG Banshee is a solid foundation to build from.

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