CMMG Banshee MK4 5.7x28 Pistol Caliber Carbine
- .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 delivers rifle-like ballistics in 5.7x28mm with minimal recoil. Features Black Nitride barrel, 11" M-LOK handguard, Picatinny rail receiver, and includes 32-round magazine.
The Modern Personal Defense Carbine
The CMMG Banshee MK4 represents a thoughtful approach to the personal defense rifle. Built around the proven 5.7x28mm cartridge, this platform delivers rifle-caliber ballistics with significantly less recoil than traditional pistol caliber carbines—a genuine advantage for shooters seeking controllability without compromise.
Platform & Modularity
Based on the AR15 platform, the Banshee MK4 uses a standard AR15 lower receiver. This means you benefit from decades of AR15 development and aftermarket support. The rifle accepts CMMG's improved 5.7x28mm conversion magazines, eliminating the need for proprietary lower receivers. If you appreciate the modularity potential of the AR15 platform, you'll find the Banshee MK4 a natural fit.
Ergonomic Design
Key Features:
- Black Nitride medium taper threaded barrel for durability and corrosion resistance
- 11" EML M-LOK handguard with full-length slots on both sides and bottom
- M-LOK slots between top Picatinny rail sections for maximum accessory mounting
- Black Armor Cerakote aluminum Picatinny rail receiver
- CMMG-designed grips for positive control
- Quick-deploying RIPBRACE for rapid deployment
What's Included
Each Banshee MK4 ships with one 32-round magazine, giving you substantial capacity for training or defensive use.
The Verdict
The Banshee MK4 is purpose-built for shooters who demand a modern, modular personal defense carbine. The 5.7x28mm cartridge offers genuine performance advantages, while the AR15 platform ensures long-term support and customization options.
