The CMMG Banshee MKGs is a 9mm AR pistol built for shooters who want modern firepower in a compact, maneuverable package. This fixed ejector handgun combines the familiar AR ergonomics and modularity with a short 5-inch barrel and the convenience of Glock-pattern magazines—feeding from readily available 33-round double-stack mags. At just over 20 inches long and 4.5 pounds, the Banshee MKGs delivers serious capability without the bulk, making it a natural choice for home defense, range work, or any shooter who values quick handling in tight spaces.
CMMG engineered this platform around their fixed ejector, radial delayed blowback operating system, which runs reliably on 9mm without sacrificing reliability or shooter control. The 5-inch barrel sports a CMMG ZEROED linear compensator threaded at 1/2x28, helping tame muzzle rise and keeping your sight picture locked during rapid fire. The upper is billet 6061-T6 aluminum with a full-length Picatinny rail, while the lower is forged 7075-T6—tough enough for hard use and detailed enough to show off CMMG's Armor Black Cerakote finish.
The EML4 M-LOK handguard runs the full length of the gun, with accessory slots at 3, 6, and 9 o'clock and an integrated handstop for consistent grip. The RipBrace lets you shoulder this legally as a pistol, and the ZEROED ambi charging handle, drop-in trigger, and 60/90-degree safety selector mean left-handers and right-handers both get a purpose-built ergonomic experience. This is a serious defensive platform dressed in CMMG's no-nonsense house specs.
| Caliber | 9mm Luger |
| Barrel Length | 5 inches |
| Barrel Twist | 1:10 |
| Operating System | Fixed Ejector Radial Delayed Blowback |
| Muzzle Device | CMMG ZEROED Linear Comp, 1/2x28 threads |
| Upper Receiver | Billet 6061-T6 Aluminum |
| Lower Receiver | MKGs Forged 7075-T6 Aluminum |
| Handguard | CMMG EML4 M-LOK |
| Charging Handle | CMMG ZEROED Ambi |
| Trigger | ZEROED Drop-In Single Stage |
| Safety Selector | CMMG ZEROED 60/90 Degree |
| Stock/Brace | CMMG RipBrace |
| Magazine | Glock 33-round |
| Buffer Type | Carbine |
| Grip | CMMG ZEROED Pistol Grip |
| Trigger Guard | Integrated |
| Receiver Extension | CMMG 6 Position Fastback |
| Finish | Cerakote Armor Black |
| Overall Length | 20.8 inches |
| Weight | 4.5 lbs |
This handgun is designed around Glock-pattern double-stack magazines. It ships with a 33-round magazine and accepts any compatible aftermarket Glock mag in that configuration, giving you tons of affordable options for training and duty use.
The Banshee MKGs ships with a RipBrace. For current legal guidance on shouldering braces, consult your local ATF resources and state laws, which vary by jurisdiction.
Yes. The fixed ejector, radial delayed blowback system is designed for reliable 9mm operation, the compact 5-inch barrel keeps it maneuverable indoors, and the 33-round magazine capacity gives you plenty of rounds on hand. The ambi controls and integrated safety make it equally accessible to left and right-handed shooters.
The CMMG EML4 features M-LOK slots at 3, 6, and 9 o'clock positions for easy accessory mounting, a full-length Picatinny rail on top for optics and lights, and an integrated handstop that helps with consistent grip and control.
CMMG
