Daniel Defense DDM4 M4A1 RIS II 5.56 NATO Semi-Auto Rifle, 16 Inch, Flat Dark Earth, Pinned & Welded A2 Flash Hider
This Daniel Defense DDM4 M4A1 RIS II stands out with its M4A1-marked upper receiver, flat dark earth finish, and the correct M4A1 RIS II free-float quad rail featuring the rollmarked U.S. Patent No. 7,716,085 and CAGE code 3E2E2. It is a direct-impingement AR-15 platform with a 16-inch barrel, an A2-style flash hider that is pinned and welded, and ambidextrous safety controls. The rifle includes installed fixed iron sights and ship-out accessories, making it a complete, ready-to-use package.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are some mild scuffs and light wear on exterior surfaces. There is mild pitting on the safety selector and the magazine release.
What’s Included
- Original factory plastic hard case
- 1x 32-round polymer AR-15 pattern magazine with yellow anti-tilt follower
- Fixed front and rear iron sights installed
- Textured polymer rail panels installed on handguard
The M4A1 RIS II handguard is the correct Daniel Defense free-float quad rail, rollmarked “M4A1 RIS II” with U.S. Pat. No. 7,716,085 and CAGE code 3E2E2. It features a full-length T-marked top rail and a bolt-up six-screw clamping system that secures the rail to the upper while maintaining a free-floated barrel.
The upper receiver is marked “M4A1” and “5.56.” It includes the forward assist, ejection-port cover, and brass deflector. The rifle operates on a semi-automatic, direct-impingement system and accepts detachable AR-15 pattern magazines.
The 16-inch barrel is capped with an A2-style flash hider that is pinned and welded. This setup provides a durable, fixed muzzle device configuration as delivered.
Controls and furniture include an ambidextrous safety selector, a Daniel Defense pistol grip with rubberized texturing, and an adjustable stock in flat dark earth with rubberized texturing. The stated length of pull is 12.0 inches.
Sighting equipment consists of a rail-mounted front sight and a fixed rear sight with an A1-style windage drum, installed and ready for use. The rifle’s finish is flat dark earth on the receiver and furniture. Made in the United States.

