The Daniel Defense M4A1 URG 5.56mm 14.5" FDE tactical rifle upper receiver group represents the proven platform trusted by US Special Operations Command since 2005. This complete upper receiver is built around a cold hammer-forged M4 profile barrel paired with Daniel Defense's RIS II quad rail handguard—the same rail system fielded on SOPMOD Block II rifles. Whether you're building a precision carbine for the range, setting up a home-defense AR, or assembling a tactical platform for duty use, this upper delivers the reliability and modularity that serious shooters depend on.
Construction quality runs throughout. The upper receiver itself is CNC-machined from 7075-T6 aluminum and type III hard-coat anodized; the 14.5" barrel is chrome-moly vanadium steel, cold hammer-forged with a 1:7 twist rate, chrome-lined, and shot-peened and magnetic-particle tested for consistency. A pinned, low-profile gas block drives a carbine-length direct impingement system, while the included M16 profile bolt carrier group is mil-spec chrome-lined with a properly staked gas key. The permanently attached Daniel Defense flash suppressor (17-4 stainless, salt-bath nitrided and pinned/welded) keeps the platform compact without sacrificing muzzle control.
The GRIP-N-RIP charging handle works equally well for left- and right-handed operators, and the FDE finish pairs naturally with modern furniture and optics. This is a plug-and-play upper receiver designed to mate with any mil-spec lower; sights are sold separately, leaving optic and accessory choices entirely up to you. Made in the USA, it's the kind of upper that rewards both novice builders and experienced gunsmiths.
| Caliber | 5.56mm NATO/.223 Remington |
| Barrel Length | 14.5 inches |
| Barrel Profile | M4 |
| Barrel Twist Rate | 1:7 |
| Barrel Material | Chrome-Moly Vanadium Steel, Cold Hammer-Forged, Chrome-Lined |
| Upper Receiver | 7075-T6 Aluminum, CNC Machined, Type III Hard-Coat Anodized |
| Handguard | Daniel Defense RIS II (6061-T6 Aluminum, Type III Hard-Coat Anodized) |
| Gas System | Carbine-Length Direct Impingement, Pinned Low-Profile Gas Block (4140 Steel) |
| Bolt Carrier Group | M16 Profile, Mil-Spec, Chrome-Lined, MP Tested, Properly Staked Gas Key |
| Charging Handle | GRIP-N-RIP (Ambidextrous) |
| Muzzle Device | Daniel Defense Extended Flash Suppressor (17-4 PH Stainless, Salt-Bath Nitrided, Pinned & Welded) |
| Finish | FDE |
| Sights | Sold Separately |
| Country of Origin | Made in the USA |
The Daniel Defense M4A1 URG is a mil-spec upper receiver and will mate with any mil-spec AR-15 lower receiver. It's a complete upper group, so you'll need to source a lower separately to build the rifle.
This is a complete upper receiver group. It includes the upper receiver, barrel, handguard, bolt carrier group, charging handle, and flash suppressor. You'll need to pair it with a lower receiver and add sights (sold separately) to complete the rifle.
Yes. The GRIP-N-RIP charging handle is ambidextrous and works equally well for left- and right-handed operators, making this upper suitable for either-handed shooters.
The barrel is 14.5 inches long with a 1:7 twist rate, designed for reliable 5.56mm NATO ammunition.
Daniel Defense
Daniel Defense
Daniel Defense
Daniel Defense
