Daniel Defense DDM4 V5 legacy model. 16-inch cold hammer forged barrel. Original DDM4 free-float rail system. Foundational model in Daniel Defense semi-auto lineup. Type: Rifle Action: Semi-Auto Caliber: 5.56 NATO Capacity: 30 Year introduced: 2008, USA Weight: 61.6 oz Overall length: 32.25" Status: Discontinued Intended use: Duty, Defense, Patrol