Daniel Defense DDM4 M4A1 RIS II 5.56 NATO 16-inch Semi-Auto AR-15 Rifle, Free-Float Quad Rail, Matte Black
This Daniel Defense DDM4 M4A1 RIS II stands out with its factory two-piece free-float quad rail, T-marked flat-top upper, and detailed rail roll marks including the U.S. patent and CAGE code. It features a 16-inch barrel with an open-tine three-prong flash hider and comes in excellent overall and bore condition. Rail cover panels are installed, and it includes a 32-round magazine, hard case, and a Daniel Defense DD5 Firearms Operation & Safety Manual (not model-correct for this rifle).
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There is some mild wear from light use.
What’s Included
- Hard plastic rifle case
- Daniel Defense DD5 Firearms Operation & Safety Manual (not model-correct for this rifle)
- Picatinny rail cover panels (installed)
- 1x 32-round polymer AR-15/STANAG-pattern magazine
The M4A1 RIS II handguard is a two-piece free-float quad rail with a continuous 12 o'clock Picatinny and numbered T-slots. It is roll-marked with U.S. PAT. NO. 7,716,865, CAGE code 3E3E2, and P/N 01000480001, providing clear authenticity markers that collectors and enthusiasts recognize.
The upper receiver is a flat-top, T-marked Picatinny design and includes a forward assist and ejection-port cover. This layout gives a consistent mounting interface along the top rail and durable controls in the places users expect.
The rifle runs a semi-automatic, direct-impingement action in 5.56mm NATO with a 16-inch barrel and a threaded muzzle capped by an open-tine three-prong flash hider. It accepts STANAG-pattern magazines and comes with a 32-round magazine to get you started.
Furniture is practical and durable: a telescoping, adjustable stock with QD sling sockets and a Daniel Defense textured polymer pistol grip. The aluminum receiver and overall matte black finish complete a proven, duty-style configuration with a 13.5-inch length of pull and a non-ambidextrous selector marked SAFE/FIRE.