Daniel Defense DDM4 V1 original model. 16-inch cold hammer forged barrel. Original Daniel Defense free-float rail. Foundational model that established DDM4 lineage. Type: Rifle Action: Semi-Auto Caliber: 5.56 NATO Capacity: 30 Year introduced: 2005, USA Weight: 62.4 oz Overall length: 32.25" Status: Discontinued Intended use: Duty, Defense, Patrol