The DDM4A1 RII is designed as a dependable, duty-ready AR-15 pattern rifle built around a fully ambidextrous lower, allowing operation of the bolt catch, safety selector, and magazine release from either side without shifting the firing hand. An ambidextrous GRIP-N-RIP charging handle further supports seamless use by right- or left-handed shooters. Caliber: 5.56 NATO Weight: 6.74 lbs Overall Length: 31-1/2" to 34-3/4" Action: Semi-Automatic DI Safety: Ambidextrous Barrel Length: 14.5" Barrel Twist: 1:7 Barrel Thread Pitch: 1/2×28 TPI

Daniel Defense DDM4A1 RII 5.56 NATO 14.5" Pinned and Welded Black 32+1 SB-022 Daniel Defense DDM4A1 RII

Daniel Defense DDM4A1 – SOCOM-Grade AR-15 | 5.56 NATO | RIS II Quad Rail The DDM4A1 is the same platform trusted by U.S. Special Operations — now available to you. Built around a 14.5" Cold Hammer Forged, chrome-lined barrel (pinned to 16" for NFA compliance) with a 1:7 twist, this rifle is made to run hard and shoot straight for tens of thousands of rounds. The full-length RIS II Picatinny quad rail gives you 12.5" of real estate for lights, lasers, grips, and whatever else your setup demands. If you want a duty-grade AR that's been proven downrange, this is it.

The Daniel Defense DDM4A1 is a battle-proven, mil-spec AR-15 platform engineered to meet the exacting standards of U.S. Special Operations Command, delivering exceptional reliability under the most demanding conditions. Built around a Cold Hammer Forged, chrome-lined 14.5-inch M4-profile barrel in 5.56 NATO with a 1:7 twist, this rifle delivers superior accuracy, longevity, and consistent performance shot after shot.