Daniel Defense DDM4 V7 in .300 Blackout with 14.5-inch barrel and pinned compensator, a near-SBR compact rifle configuration with military-contractor build quality. Type: Rifle Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2016, USA Weight: 96 oz Overall length: 33" Status: Active Intended use: Tactical, Suppressor Host