The CMMG Banshee MKG is an AR-pattern pistol chambered in .45 ACP with a 5-inch threaded barrel. It runs on a radial delayed blowback system and holds 13 rounds. The optics rail accepts direct mounting without additional hardware. 
 

Key Specifications 

• Brand: CMMG 
• Model: Banshee MKG 
• Caliber: .45 ACP 
• Action: Semi Auto 
• Capacity: 13+1 rounds 
• Barrel Length: 5 inches 
• Color/Finish: Black 
   

Detailed Features 

• Radial delayed blowback operating system 
• 5-inch threaded barrel for muzzle device compatibility 
• Optics-ready rail 
• 13-round magazine capacity

Owners of the CMMG Banshee MKG in .45 ACP commonly point to the radial delayed blowback system as the main reason recoil stays manageable for this caliber in a short platform. The compact 5-inch format comes up often as a practical advantage for handling in close spaces.

The Banshee MKG's threaded barrel is a regular draw for owners who run muzzle devices, and the optics-ready setup removes one step from the build process. Some owners note the platform can be particular about magazine compatibility, with dedicated CMMG magazines getting better reliability mentions than aftermarket options.

Trigger feel is one area where opinions diverge. Many find it serviceable for an AR-pattern pistol; others upgrade it early in the build. Build quality and the Black finish are generally rated positively, with few complaints about fit or finish durability.