The CMMG Banshee MKGS is a semi-automatic pistol caliber carbine chambered in 9mm with an 8-inch barrel. It ships in a Midnight Bronze finish and includes a brace. The Banshee MKGS accepts Glock-pattern magazines and holds 33+1 rounds with the included magazine. 
 

Key Specifications 

• Brand: CMMG 
• Model: Banshee MKGS 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 33+1 
• Barrel Length: 8 in 
• Color/Finish: Midnight Bronze 
   

Detailed Features 

• 8-inch barrel in a pistol-configuration PCC platform 
• Midnight Bronze Cerakote finish on receivers and barrel 
• Glock-pattern magazine compatibility (MKGS designation) 
• RIP (Radial Delayed Blowback) ejector system 
• Includes pistol brace

CMMG Banshee MKGS owners frequently comment on the Radial Delayed Blowback operating system. The reduced felt recoil compared to straight blowback 9mm platforms gets mentioned as a genuine functional difference, not just a marketing claim. A minority of owners feel the system adds complexity they would rather not deal with during cleaning.

The Midnight Bronze Cerakote finish draws a lot of attention in person and in photos. Owners who like the look are happy with the durability; a few report that the finish color can vary slightly batch to batch and differs from photos online.

Glock magazine compatibility is the main practical selling point for existing Glock owners. The ability to share magazines between a carry pistol and the Banshee MKGS is cited repeatedly as a reason for the purchase. The 8-inch barrel configuration requires awareness of applicable regulations depending on the buyer's state and intended configuration.