Dead Air Armament Ghost M AR-pistol in .300 Blackout with 8-inch barrel, built by the suppressor manufacturer as the ideal host platform for their Ghost suppressor. Type: Pistol Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2019, USA Weight: 80 oz Overall length: 24" Status: Active Intended use: Suppressor Host