Daniel Defense DDM4 M4A1 5.56mm NATO AR-15 Rifle, 16.1" Cold-Hammer-Forged Threaded Barrel, RIS II Quad Rail, Holosun HS510C
This Daniel Defense DDM4 M4A1 pairs the proven RIS II free-float quad rail with a 16.1" cold-hammer-forged, threaded barrel and an installed Holosun HS510C red dot sight. It features the ambidextrous extended-latch charging handle, an adjustable stock with rubber buttpad, and a stated 32+1 capacity. The rail is the SOCOM-lineage M4A1 RIS II designed to accept an M203 while keeping the barrel free-floated, with factory T and L rail marks and Black Creek, GA engraving.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling and use marks are present on exterior surfaces. Please review the photos for close-up views of the noted areas.
What’s Included
- Optic: Holosun HS510C open reflex sight (installed)
- Case: Original hard rifle case
- Vertical Foregrip: Rail-mounted polymer vertical foregrip (installed)
- Custom Part: Ambidextrous extended charging handle (installed)
- Magazine: 1x 32-round polymer AR-15 magazine (brand/model not identified)
The DDM4 M4A1 configuration centers on the Daniel Defense M4A1 RIS II free-float quad rail. This SOCOM-lineage rail is engineered to accept an M203 while maintaining a free-floated barrel, and it features Picatinny at 12/3/6/9 o'clock with T and L rail reference marks and factory "M4A1 RIS II" and Daniel Defense/Black Creek, GA engraving.
Its 16.1" cold-hammer-forged, free-floated, threaded barrel is capped with an A2-type birdcage flash suppressor. The upper includes a forward assist, shell deflector, and ejection-port cover. The lower shows "Cal: MULTI" in the rollmark with selector markings "SAFE/SEMI."
The rifle uses a direct-impingement operating system with an aluminum receiver set and an adjustable, collapsible polymer stock equipped with a rubber buttpad. A textured polymer pistol grip and a rail-mounted vertical foregrip provide secure handling. The ambidextrous extended-latch charging handle is installed for easier operation.
An installed Holosun HS510C open reflex red dot sight provides a ready sighting solution on the top rail. Capacity is stated at 32+1 with the included 32-round polymer magazine. Country of origin is the United States.