The CMMG Banshee Mk4 is an AR-pattern pistol chambered for .223 Rem/5.56 NATO designed for compact range use, truck or backpack carry, and general-purpose utility. Its shortened 10.5-inch barrel and Mk4 platform provide a compact footprint while retaining standard AR compatibility.
The Banshee Mk4 is built with an aluminum receiver set and a polymer pistol grip, and it uses CMMG’s EML handguard with full-length M-LOK slots for accessory mounting. The pistol ships with an ambidextrous safety, an included 30-round Magpul magazine, a linear muzzle device, and a Picatinny optic footprint.
Key Specifications
- The barrel length is 10.5 inches.
- The caliber is .223 REM/5.56 NATO.
- The action is Semi-Auto.
- The magazine capacity is 30 rounds.
- The number of magazines included is 1.
- The frame material is Aluminum.
- The grip material is Polymer.
- The firearm includes an ambidextrous safety and is marked as Ambidextrous Safety: Yes.
- The optic footprint is PICATINNY.
- The weight is listed as 88 ounces.
State Restrictions: This firearm is not available for sale or direct shipment to Rhode Island, Washington, Illinois, and Oregon.
Designed for straightforward AR-pattern compatibility and compact handling, the CMMG Banshee Mk4 offers reliable .223 Rem/5.56 NATO performance in a short-barrel configuration. Buy the CMMG Banshee Mk4 .223 Rem/5.56 NATO online today for a compact AR-style pistol with M-LOK versatility and ambidextrous controls.









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