CMMG Banshee MK4 9mm Pistol, 8" Barrel
- .300 BLK 12.5" Barrel $1,200.00
- .300 BLK 8" Pistol $1,394.68
- .300 Blackout 8" Midnight Bronze $1,503.76
- .300 Blackout, 8" Barrel $1,503.76
- .308 Win 12.5" Barrel $1,705.87
- .338 ARC, 10.5" Midnight Bronze $1,528.35
- CMMG Banshee MK4 300 Blackout 12.5" Carbine $1,528.35
- CMMG Banshee MK4 300 Blackout 12.5" Pistol $1,543.79
- 300 Blackout 12.5" Coyote Tan $1,543.79
- 300 Blackout 8" Bronze $1,515.34
- 300 Blackout 8" Coyote Tan $1,503.76
- 300 Blackout 8" Pistol $1,515.34
CMMG's Banshee MK4 brings AR-15 ergonomics to 9mm in a compact 8-inch pistol platform. Features fixed ejector radial delayed blowback, M-LOK handguard, RipBrace, and ships with 30-round magazine.
CMMG Banshee MK4: AR-15 Handling in 9mm
The Banshee MK4 represents a thoughtful approach to pistol-caliber carbines. Built on CMMG's proven Mk4 platform, this 9mm handgun delivers the manual of arms shooters already know from the AR-15 family, making it accessible to experienced riflemen and newcomers alike.
Key Features
Operating System & Reliability
- Fixed ejector radial delayed blowback design for smooth, reliable operation
- 4140CM SBN barrel with 1:10 twist rate optimized for 9mm ballistics
- CMMG ZEROED linear compensator reduces muzzle rise
Ergonomics & Handling
- Standard AR-15 pattern lower receiver—familiar controls and operation
- Ambidextrous charging handle for left and right-handed shooters
- CMMG ZEROED single-stage trigger for clean, predictable breaks
- 60/90-degree safety selector for quick manipulation
Modularity & Customization
- CMMG EML4 handguard with full-length M-LOK slots on all sides
- Compatible with standard PMAG magazines via CMMG 9mm conversion adapters
- Accepts CMMG 9ARC 30-round magazines
- Picatinny rail sections for optics and accessories
Build Quality
- Billet 6061 T6 aluminum upper receiver
- Forged 7075 T6 aluminum lower receiver
- Cerakote finish for durability
- RipBrace for controlled handling and stability
- Weight: 4.6 lbs | Overall length: 23.7 inches
Why Choose the Banshee MK4
This platform bridges the gap between pistol and rifle. The 8-inch barrel delivers effective 9mm performance in a compact package, while the AR-15 controls mean minimal learning curve. Whether you're a competitive shooter, home defender, or recreational enthusiast, the Banshee MK4 offers reliability, accuracy, and the modularity serious shooters demand.
