The CMMG Banshee FE MkGs is a 9mm Luger AR-pattern pistol built around an 8-inch, 4140CM salt bath nitride barrel with 1/2x28 muzzle threads and a ZEROED linear compensator. It runs on CMMG's Fixed Ejector Radial Delayed Blowback system and feeds from double-stack Glock-pattern magazines, with a 33-round magazine included. The billet aluminum upper and forged MkGs lower are finished in Tungsten Cerakote and paired with a free-float M-LOK handguard. 
 

Key Specifications 

• Brand: CMMG 
• Model: Banshee FE MkGs 
• Caliber: 9mm Luger 
• Action: Semi Auto (Radial Delayed Blowback) 
• Capacity: 33+1 
• Barrel Length: 8 in 
• Finish: Tungsten Cerakote 
   

Detailed Features 

• EML7 M-LOK free-float handguard for accessory mounting 
• ZEROED ambidextrous charging handle and ZEROED 60/90 ambidextrous safety 
• ZEROED pistol grip and integrated trigger guard 
• CMMG RipBrace on a 6-position Fastback receiver extension 
• Threaded 1/2x28 barrel with a ZEROED linear compensator installed 
• Includes one 33-round Glock-pattern magazine

Owners of the Banshee generally speak well of CMMG's blowback reliability, saying it cycles cleanly once broken in and shrugs off a range session without fuss. A minority report needing to tune buffer weight or ammo choice before it runs smoothly, which is a common theme with radial delayed blowback pistols.

On handling, the RipBrace and ambidextrous ZEROED controls draw praise for making the pistol easy to shoulder and run from either side. The grip and safety placement feel natural to shooters coming from a full-size AR, though the added mass up front from the compensator shifts the balance forward for some.

Value-wise, the Glock-pattern magazine compatibility is a clear win, since spare magazines are cheap and everywhere. Aftermarket support for CMMG's MkGs lower is thinner than for a standard AR lower, so some owners note fewer drop-in options if they want to swap parts beyond what CMMG offers.