The Daniel Defense DD4 RIII URG Black is a complete upper receiver group built for shooters who demand non-NFA compliance without compromise. The 14.5-inch barrel arrives pinned and welded with a flash suppressor, bringing total length to a full 16 inches legally. This configuration eliminates the need for an ATF Form 1 or tax stamp.
Every Daniel Defense upper is hand assembled, quality assurance tested, and test fired before shipment. The RIS III 12.5-inch free-float M-LOK handguard uses Daniel Defense’s patented 6-bolt attachment system for rock-solid stability and M-LOK modularity. In 5.56 NATO, this upper delivers proven accuracy and reliability for tactical training, competition, and duty applications.
Built for Serious Shooters
Moreover, the free-float design isolates barrel harmonics from handguard influence. Additionally, M-LOK slots accept industry-standard accessories without proprietary rails. Therefore, you get a modern, flexible platform that accepts standard AR15 lower receivers and mil-spec components.
Materials & Construction
Upper Receiver: Mil-Spec with Indexing Marks and M4 Feed Ramps, CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized
Barrel: 14.5″ Government Profile, Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, Chrome Lined, Mil-Spec Heavy Phosphate Coated, HP/MPI Tested — with a Daniel Defense Flash Suppressor permanently pinned and welded to bring total barrel length to 16″, a non-NFA configuration that requires no tax stamp
Gas System: Pinned Low-Profile Gas Block, CNC Machined of 4140 Hardened Steel, Mil-Spec Heavy Phosphate Coating, Mid-Length, Direct Impingement
Muzzle Device: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished — pinned and welded to the barrel for 16″ overall length
Handguard: Daniel Defense RIS III 12.5, 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-23-191-20088-006
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
14.5″ Government Profile, Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, Chrome Lined, Mil-Spec Heavy Phosphate Coated, HP/MPI Tested — with a Daniel Defense Flash Suppressor permanently pinned and welded to bring total barrel length to 16″, a non-NFA configuration that requires no tax stamp
Gas System
Pinned Low-Profile Gas Block, CNC Machined of 4140 Hardened Steel, Mil-Spec Heavy Phosphate Coating, Mid-Length, Direct Impingement
Handguard / Rail System
Daniel Defense RIS III 12.5, 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 — pinned and welded to the barrel for 16″ overall length
Although the bare barrel measures 14.5 inches, Daniel Defense permanently pins and welds the flash suppressor to the muzzle, bringing the total barrel length to 16 inches. This is a non-NFA configuration — no ATF Form 1 or tax stamp is required for this upper as configured.
Why Buy from Western Sport?
Western Sport’s knowledgeable staff has hands-on experience with Daniel Defense builds.
We stock Daniel Defense complete uppers and offer competitive pricing on premium quality.
Every purchase includes expert guidance on compatibility, setup, and performance tuning.
Western Sport provides ongoing after-sale support for your Daniel Defense rifle configuration.
Local inventory ensures fast shipping and hassle-free returns on all our firearms products.
Frequently Asked Questions
Q: What 5.56 NATO ammunition works best in this upper?
A: Standard mil-spec 5.56 NATO and commercial .223 Remington are both reliable choices. This upper’s chamber and gas system handle full-power military loads, hunting rounds, and match-grade ammo equally well. Choose based on your intended use: training favors affordable mil-spec; precision work benefits from match-grade brass.
Q: Will this Daniel Defense upper fit my lower receiver?
A: Yes, this complete upper receiver group is fully compatible with any mil-spec AR15 lower receiver. The upper uses standard pinned extension and bolt carrier group dimensions. You can pair it with any stripped or assembled lower that accepts standard AR15 uppers.
Q: What makes the RIS III handguard different from other M-LOK rails?
A: The RIS III 12.5-inch M-LOK handguard features Daniel Defense’s proprietary 6-bolt attachment system. Furthermore, it is optimized for free-float accuracy and accepts standard M-LOK accessories across the full length. Additionally, the profile balances lightweight handling with rigid accessory mounting.
Q: What’s included with this complete upper receiver group?
A: A complete upper receiver group ships fully assembled with bolt carrier group, charging handle, and installed handguard. You receive a ready-to-install upper that pairs directly to any mil-spec lower receiver. No additional parts or assembly are required—simply bolt it down and begin shooting.
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: No. Although the bare barrel measures under 16 inches, Daniel Defense permanently pins and welds the flash suppressor to reach a full 16 inches. As a result, this upper is a non-NFA configuration and requires no tax stamp.
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