The Daniel Defense DDM4A1 RII represents their classic M4 platform featuring a 14.5-inch cold hammer-forged barrel (with pinned and welded flash suppressor for 16-inch legal length) and the proven RIS II rail system. This 5.56mm NATO rifle incorporates the battle-tested RIS II quad rail, providing maximum durability and attachment options for accessories. The platform features a carbine-length gas system, chrome-lined barrel with 1:7 twist rate, and Daniel Defense's improved barrel extension. Standard features include enhanced charging handle, Daniel Defense furniture including their glass-filled polymer stock and pistol grip, and the distinctive quad rail system that made the platform famous. The rifle weighs approximately 7.3 pounds unloaded and comes with one 32-round magazine.