Daniel Defense DD4 RIII S AR Pistol, 5.56 NATO, 11.5 in Barrel, RIS III 10.5 in M-LOK, Black/Tan
The Daniel Defense DD4 RIII S is a factory-built AR-15 pattern pistol chambered in 5.56 NATO with an 11.5 in barrel and a carbine-length gas system. It features the 10.5 in RIS III free-float M-LOK handguard, a continuous T-marked 1913 Picatinny top rail, and a threaded muzzle with a three-slot flash hider. Markings include a laser-marked upper and patent-marked handguard, and the pistol ships with two 30-round magazines and installed M-LOK accessories.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The firearm shows minor, superficial scratches and blemishes from prior handling.
What’s Included
- Two 30-round polymer AR-15 magazines
- Angled M-LOK hand stop/foregrip (installed)
- Slim M-LOK rail cover panel (installed)
This DD4 RIII S uses Daniel Defense’s RIS III 10.5 in two-piece free-float handguard made from 6061-T6 aluminum. It provides M-LOK slots and uses a 6-bolt bolt-up interface for a rigid, repeatable fit. The top features a continuous T-marked 1913 Picatinny rail that spans the receiver and handguard for straightforward accessory alignment.
The 11.5 in threaded barrel is paired with a carbine-length gas system and capped by a flash hider with three elongated slots. Operation is semi-automatic with a direct impingement system, and controls include a manual safety. Capacity is 30+1 rounds.
Furniture consists of a tan adjustable brace with a hook-and-loop strap and a black polymer pistol grip with the Daniel Defense logo. The pistol wears a black finish with a matching black receiver set.
Factory markings include an upper receiver laser-marked "DD4RIII s," a lower marked "MODEL DDM4" with "CAL MULTI," and handguard rollmarks noting "RIS III 10.5" and U.S. Pat. 7,716,865. Manufacturer markings indicate Daniel Defense, Black Creek, GA, USA.