The CMMG Banshee FE Mk17 is one of the shortest 9mm pistols in the Banshee lineup, built on a Mk17 lower that runs Sig Sauer P320, M17, and M18 pattern magazines. Feeding a pistol-caliber AR from your handgun mags lets a shooter run the same magazine pouches, carriers, and range gear across both guns — a practical setup for home defense or truck builds where commonality matters. The Fixed Ejector Radial Delayed Blowback action keeps the bolt weight and recoil impulse manageable for quick follow-up shots at close range.

The 5-inch 4140CM SBN MT-contour barrel is threaded 1/2x28 and ships with CMMG's ZEROED Linear Comp to direct gas and muzzle blast forward, away from the shooter. A Picatinny upper rail gives a full-length optic and iron sight platform, and the M-LOK handguard accepts lights, lasers, and vertical grips for duty-style builds. With an overall package that's short enough to maneuver in tight spaces, the Banshee FE Mk17 makes sense for home defenders who already run a P320 as their primary handgun.