Description
The Daniel Defense M4A1 is the closest thing on a commercial shelf to the rifle Daniel Defense builds for military contracts. This California compliant version pairs a 14.5 inch cold hammer forged barrel with a permanently pinned and welded extended flash suppressor, and it wears the M4A1 RIS II quad rail in Flat Dark Earth over black receivers. It ships with a 10 round Magpul PMAG.
Daniel Defense M4A1 Barrel and Muzzle
The barrel is 14.5 inches in a true M4 profile, cold hammer forged from chrome moly vanadium steel, chrome lined and finished in mil-spec heavy phosphate, with a 1:7 twist. The M4 profile is the military contour, complete with the grenade launcher cut, and it is part of what makes this rifle handle and balance the way the issued gun does.
The extended Daniel Defense flash suppressor is pinned and welded, which brings the barrel and muzzle device to a legal 16 inches as a single permanent assembly. It is machined from 17-4 PH stainless steel with a salt bath nitride finish, so it resists the erosion that eats cheaper flash hiders.
RIS II Rail and Carbine Gas
The RIS II is the rail system that put Daniel Defense on the map. It is a CNC machined 6061-T6 aluminum quad rail with Picatinny on all four sides, and it free floats the barrel while providing a continuous top rail with the upper receiver. Quad rails have fallen out of fashion next to M-LOK, but there is still nothing that mounts legacy accessories as directly, and it is what the military specification calls for.
Gas is carbine length with a pinned low profile gas block machined from 4140 hardened steel. Carbine gas on a 14.5 inch barrel is the original M4 configuration. It is a slightly sharper impulse than mid-length, but it is also the most thoroughly proven gas length in the platform history.
Specifications
- Model: DDM4 M4A1, California compliant
- Manufacturer part number: 02-088-06027-055
- Caliber: 5.56x45mm NATO
- Action: Semi-automatic, direct impingement
- Capacity: 10 rounds, Magpul PMAG
- Barrel length: 14.5 in., M4 profile
- Barrel: Cold hammer forged chrome moly vanadium, chrome lined, mil-spec heavy phosphate
- Twist rate: 1:7
- Muzzle: Pinned and welded extended Daniel Defense flash suppressor, 1/2×28, 17-4 PH stainless with salt bath nitride
- Gas system: Carbine length with pinned low profile 4140 steel gas block
- Rail: Daniel Defense M4A1 RIS II quad rail, 6061-T6 aluminum, Flat Dark Earth
- Receivers: Mil-spec 7075-T6 aluminum, Type III hard coat anodized
- Stock and grip: Daniel Defense polymer with soft touch overmolding
- Bolt carrier group: M16 profile, mil-spec MP tested, chrome lined
- Weight: 6.74 lbs.
- Overall length: 31.5 in. to 34.75 in.
- Sights: None, optic ready
- UPC: 815604016605
Why Buyers Choose the Daniel Defense M4A1
This is the rifle for people who want the real thing rather than a lookalike. The barrel, bolt carrier group, and rail are the same components Daniel Defense supplies on government contracts, and the M4 profile barrel with a pinned extended flash suppressor is the configuration that has been proven across two decades of hard use.
The pinned 14.5 inch setup is also the best of both worlds legally and practically. You get the handling of a true M4 length carbine with none of the paperwork of a short barreled rifle, and the extended flash suppressor is a genuinely effective one rather than a length-filler.
Who Should Buy It
Shooters in capacity-restricted states who want a duty-grade carbine, anyone who runs legacy Picatinny-mount accessories, and buyers who specifically want the RIS II rather than a modern slim rail. It is a natural choice for training classes and defensive use. If you want the lightest possible carbine or you mount everything on M-LOK, a DDM4 with an MFR rail will suit you better, because the RIS II is heavier and thicker by design.
Learn more from Daniel Defense, or browse the rest of our firearms selection.
Every firearm we list ships to your chosen FFL and is transferred there after a background check.
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