CMMG Banshee Mk4 9mm AR Pistol, 5 in Threaded Barrel, Radial Delayed Blowback, Distressed Gray/Black, 3x 30-Round Mags
This CMMG Banshee Mk4 pairs the compact 5-inch 9mm format with CMMG's radial delayed blowback action and a feature-rich AR-15 pattern build. It wears a distressed gray/black finish over 7075-T6 aluminum receivers and includes ambidextrous controls, a free-float aluminum handguard with full-length 1913 top rail, and the CMMG RipBrace with Fastback deployment. It comes with three 30-round magazines, making it a ready-to-run, compact 9mm AR pistol.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This pistol shows minimal markings from previous handling and use. The bore is bright and clean. See the photos for details.
What’s Included
- Owner's Manual
- Three 30-round CMMG 9mm AR conversion magazines (PMAG-based polymer)
The Banshee Mk4 platform delivers a compact, AR-15 pattern 9mm with CMMG's radial delayed blowback system for smooth cycling. The forged 7075-T6 aluminum receivers include a forward assist, brass deflector, and ejection-port cover, and they are finished in a distressed gray/black scheme that carries through the upper and lower.
The 5-inch 4140 CM steel barrel features a nitride treatment and 1/2x28 threads, offering durability and easy compatibility with common 9mm muzzle accessories. A 1:10 twist supports typical 9mm loads, and the bore condition is excellent.
The free-float aluminum handguard provides a full-length 1913 top rail and an additional short rail at the 6 o'clock position, giving straightforward mounting space for sights and accessories. The setup is compact and clean, keeping weight forward of the receiver minimal.
Controls and furniture are dialed in for practical use. It includes an ambidextrous safety selector and an ambidextrous charging handle with an extended latch. The CMMG RipBrace uses Fastback technology for quick adjustment and includes a QD sling socket. A Magpul pistol grip rounds out the ergonomics, and capacity is 30+1. Made in the USA.