CMMG Banshee 300 Mk4 pistol in .300 Blackout with 8-inch barrel and CMMG's Radial Delayed Blowback system, optimized for suppressed subsonic use in a compact pistol. Type: Pistol Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2018, USA Weight: 80 oz Overall length: 22" Status: Active Intended use: Suppressor Host, Home Defense, Tactical