The CMMG Banshee Mk10 is a semi-automatic pistol chambered in 10mm with an 8-inch barrel and 30+1 round capacity. It ships in a Midnight Bronze finish and is built on CMMG's Mk10 platform. The Banshee series uses a radial-delayed blowback operating system. 
 

Key Specifications 

• Brand: CMMG 
• Model: Banshee Mk10 
• Caliber: 10mm 
• Action: Semi Auto 
• Capacity: 30+1 rounds 
• Barrel Length: 8 inches 
• Color/Finish: Midnight Bronze 
   

Detailed Features 

• Mk10 platform chambered in 10mm 
• 8-inch barrel 
• Midnight Bronze finish 
• 30+1 round capacity 
• Semi-automatic pistol configuration

Owners of the CMMG Banshee Mk10 in 10mm consistently note the radial-delayed blowback system as a standout feature, describing it as notably softer-shooting for a 10mm than comparable straight-blowback pistol-caliber designs. The 8-inch barrel makes the package compact while still delivering meaningful velocity from the cartridge.

The Midnight Bronze finish generates positive feedback for its appearance and corrosion resistance, though some owners note it shows handling marks more readily than matte finishes. Ergonomics follow the AR pistol pattern, which most shooters adapted to quickly.

The 10mm chambering draws comparisons to other Banshee variants in different calibers. Owners who shoot 10mm report the Banshee handles hot loads reliably, though a handful note that magazine compatibility is more limited than 9mm equivalents.