CMMG Banshee 300 Series Pistol

Other Thoughts

The best 5-shot group at 25-yards came with Barnes’ 115-gr. +P TAC-XPD, measuring out at 0.95”. Best groups with all ammo measured an inch and a quarter or less.

Subsonics were quiet suppressed or not, the +P loads not so much. They are pretty loud, but that’s the crack of the bullet, and it comes with the territory. Recoil was noticeable with Black Hills’ +P loads. Barnes 115-gr. +P was not nearly as stout nor was the 135-gr. Hornady Critical Duty.

Trijicon’s MWS RMR has a clear dot and at 3.5 MOA is suited to closer work. It is about as rugged as these sights get. In automatic mode it changes intensity to match ambient light, and manual adjustments can be used if necessary. Battery life is measured in years.

If you’re looking for a pistol-caliber carbine, the growing CMMG line is one of the best places to start. See them at your dealer, or for more info Contact CMMG; Tel.: (660) 248-2293; Web:

Thanks in part to the radial-blowback operation, recoil was mild and reliability 100-percent. The Banshee 300 Series 9mm currently represents the highest level of innovation in an AR pistol-caliber carbine (or in this case, pistol-caliber pistol).

Banshee 300 Series 9mm:

BARREL: 5″ MT 4140CM SBN, 9mm

MUZZLE: Thread Protector, Threaded 1/2-28


FURNITURE: Magpul MOE Pistol Grip, RIP Micro Brace

RECEIVERS: Billet 7075-T6 AL Lower, Forged 7075-T6 AL Upper


MAGAZINE: Glock 9mm 33 round

WEIGHT: 4 pounds 10 ounces

LENGTH: 18.9”

MSRP: $1,549.95