CMMG Banshee Mk4 .22 LR Micro AR-15, 4.5 in Threaded Barrel, Ambidextrous Controls, Earth-Tone Finish, 25+1
This CMMG Banshee Mk4 is a compact, rimfire AR-platform build chambered in .22 LR with a 4.5 inch threaded barrel and a micro footprint. It features ambidextrous controls, a free-float aluminum handguard with a continuous Picatinny top rail, and CMMG's Fastback receiver extension with an adjustable stabilizing brace. The matte earth-tone finish and forged receiver set give it a distinctive, durable look backed by U.S. manufacture.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The firearm presents in great shape with minor scratches and blemishes. Scratches are visible on the upper receiver and handguard.
What’s Included
- Two 25-round .22 LR detachable magazines
The 4.5 inch barrel is threaded 1/2x28 for common rimfire muzzle devices and uses a 1:16 RH twist suitable for .22 LR. The action is a simple blowback system with a dedicated rimfire-style bolt. Capacity is 25+1 with the included magazines.
The rifle uses a slick-side 7075-T6 forged upper with no forward assist and an ejection port cover, paired with a 7075-T6 forged lower. Both receivers wear a matte earth-tone finish. BANSHEE and Mk4 markings are present on the receiver set.
A short, free-float aluminum handguard provides a full-length 1913 Picatinny top rail that runs continuously across the upper and handguard, plus an additional short 1913 section at 6 o'clock. The firearm ships without sights.
Controls include an ambidextrous magazine release, a manual safety, and a CMMG-branded ambidextrous charging handle. The CMMG Fastback receiver extension supports an adjustable stabilizing brace finished in black. A Magpul MOE pistol grip rounds out the lower. Made in the USA.

