Daniel Defense DDM4 M4A1 5.56 NATO AR-15 Rifle – Mil Spec + Brown, RIS II Rail, 16 in Pinned Barrel
The DDM4 M4A1 pairs Daniel Defense’s SOCOM-contract RIS II quad-rail with a cold-hammer-forged, chrome-lined barrel, creating a battle-proven platform finished in Mil Spec + brown. A pinned and welded extended A2 flash suppressor brings the 14.5 in barrel to a legal 16 in overall length, while the ambidextrous Grip-N-Rip charging handle and fully adjustable stock round out a feature set designed for reliable, hard use.
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: Light exterior scuffs are present but do not affect operation or appearance in any meaningful way.
What’s Included
- 1 Magpul 30-round PMAG magazine (polymer)
- Installed Daniel Defense textured Santoprene rail panels (arrow motif)
Built on 7075-T6 forged receivers and a 4150 CMV steel barrel, this rifle retains the durability standards of the original USSOCOM spec. The Mil Spec + brown finish covers the upper, lower, stock, and grip for a uniform, low-glare appearance.
The cold-hammer-forged, chrome-lined barrel is cut with a 1:7 twist to stabilize the full range of 5.56 NATO projectile weights. A pinned and welded extended A2 flash suppressor meets the 16 in legal minimum while maintaining a compact overall length.
The 12.25 in RIS II quad-rail—marked with its NSN and CAGE code—offers rock-solid mounting for optics, lights, and accessories. Textured Santoprene rail panels provide heat protection and improved grip.
Daniel Defense’s ambidextrous Grip-N-Rip charging handle, adjustable stock with QD sling points, and overmolded pistol grip support control and comfort from either shoulder. The direct-impingement system keeps weight to just 6.74 lb unloaded.