CMMG Banshee 9mm (Mk17)

The CMMG Banshee Mk17 uses the same excellent Radial Delayed Blowback system as the Mk10 but with CMMG's ARC (Autoloading Radial-delayed Conversion) magazine system. The ARC magazines allow the use of both CMMG's proprietary magazines and adapters for other magazine types, providing flexibility for shooters invested in different ecosystems.

The Mk17 shares all the soft-shooting, suppressor-friendly characteristics of the Mk10 platform. The delayed blowback system reduces bolt velocity and felt recoil compared to simple blowback designs, making follow-up shots faster and extended shooting sessions more pleasant. The system also runs reliably with a wide range of ammunition weights and loadings.

CMMG builds the Mk17 with the same attention to detail as their higher-tier products: precision-machined billet receivers, quality barrels, and proper finishing. The result is a premium PCC that shoots as good as it looks. For shooters who want the Banshee experience but prefer the ARC magazine ecosystem over Glock magazines, the Mk17 delivers.