The Daniel Defense DD4 RIII S URG Black is a complete upper receiver group engineered for shooters who need compact firepower without compromise. Built around an 11.5″ cold hammer forged barrel, this upper delivers the shortest RIS III-equipped platform Daniel Defense manufactures. The result is a nimble, maneuverable upper ideal for home defense, tactical training, or confined-space operations.
Every Daniel Defense upper ships hand-assembled, quality assurance tested, and test fired at the factory. The RIS III handguard provides robust mounting real estate for optics, lights, and accessories. This configuration pairs 5.56 NATO reliability with genuinely compact ergonomics.
What You Get in a Complete Upper Receiver Group
A complete upper includes the barrel, bolt carrier group, charging handle, and handguard assembled and ready. You receive a firearm component tested to Daniel Defense’s exacting standards. Simply pair it with your lower receiver to complete the build.
Materials & Construction
Upper Receiver: Mil-Spec with Indexing Marks and M4 Feed Ramps, CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized
Gas System: Pinned Low-Profile Gas Block, CNC Machined of 4140 Hardened Steel, Mil-Spec Heavy Phosphate Coating, Carbine-Length, Direct Impingement
Muzzle Device: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished
Handguard: Daniel Defense RIS III 10.5, Patented 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum, M-LOK Attachment
Bolt Carrier Group: M16 Profile Bolt Carrier Group, Mil-Spec MP Tested, Chrome Lined, with Properly Staked Gas Key
Charging Handle: Daniel Defense GRIP-N-RIP Charging Handle — Body CNC Machined of 7075-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
Rail Panels: Daniel Defense Rail Panels, Santoprene, Heat Resistant to 300°F
Specifications
SKU / MPN
DD-23-191-02397-006
Product Type
Complete Upper Receiver Group
Item Condition
New
Caliber
5.56 NATO
Finish
Black
Receiver Material
7075-T6 Aluminum, Type III Hard Coat Anodized
Barrel
11.5″ Government Profile, Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, Chrome Lined, Mil-Spec Heavy Phosphate Coated, HP/MPI Tested
Gas System
Pinned Low-Profile Gas Block, CNC Machined of 4140 Hardened Steel, Mil-Spec Heavy Phosphate Coating, Carbine-Length, Direct Impingement
Handguard / Rail System
Daniel Defense RIS III 10.5, Patented 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum, M-LOK Attachment
Bolt Carrier Group
M16 Profile Bolt Carrier Group, Mil-Spec MP Tested, Chrome Lined, with Properly Staked Gas Key
Charging Handle
Daniel Defense GRIP-N-RIP Charging Handle — Body CNC Machined of 7075-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
Muzzle Device
Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished
This upper ships with a barrel measuring under 16 inches. Installing it on a rifle-configured AR-15 lower receiver would create a Short-Barreled Rifle (SBR), which is regulated under the National Firearms Act. Buyers who plan to build this into a rifle-configured firearm should first submit ATF Form 1 and obtain an approved tax stamp, or install it on a pistol-configured lower consistent with current ATF rules. Western Sport cannot advise on individual compliance — buyers are responsible for following all applicable federal and state law.
Why Buy from Western Sport?
Western Sport’s staff has deep expertise in Daniel Defense builds and firearms regulations.
We offer competitive pricing on Daniel Defense uppers and fast, reliable shipping nationwide.
Every Daniel Defense upper arrives factory tested, assembled, and ready to integrate.
Our team provides honest guidance on compatibility, caliber selection, and receiver pairing.
We stand behind Daniel Defense quality with transparent product information and after-sale support.
Frequently Asked Questions
Q: What ammunition performs best in 5.56 NATO with this barrel length?
A: The 11.5″ barrel optimizes velocity for standard 5.56 NATO loads. Both full-power military surplus and modern commercial ammunition cycle reliably. Subsonic loads require a suppressor and dedicated cycling tuning for best results.
Q: Which lower receivers is this upper compatible with?
A: This upper works with any mil-spec AR-15 lower receiver. However, the barrel length triggers NFA implications depending on your lower’s configuration. Verify your specific lower type and local laws before assembly.
Q: How does the RIS III compare to other Daniel Defense handguard options?
A: The RIS III balances rail coverage with weight efficiency. It provides ample mounting real estate for modern optics and accessories. Daniel Defense offers other rail lengths for different mission profiles.
Q: What is included with a complete upper receiver group?
A: You receive the barrel, bolt carrier group, charging handle, handguard, and upper receiver. All components are assembled and factory tested. This is a plug-and-play component requiring only a compatible lower receiver.
Q: What is the RIS III rail system on this upper?
A: The RIS III is Daniel Defense’s next-generation free-float handguard. It uses a patented 6-bolt Bolt-Up System for a more secure, repeatable zero than older quad-rail designs. Furthermore, M-LOK slots run along the rail for mounting lights, lasers, and grips.
Q: Do I need NFA paperwork for this upper?
A: It depends on your lower receiver. Installing this upper on a pistol-configured lower with no stock keeps the build classified as a pistol. However, installing it on a rifle-configured lower, or adding a stock, creates a short-barreled rifle and requires an approved ATF Form 1 first.
Reviews
There are no reviews yet.