Daniel Defense DD4 RIIIS Complete Upper 556NATO 11.5″ Barrel 23-191-02397-011

Daniel Defense DD4 RIIIS Complete Upper 23-191-02397-011

Daniel Defense, DD4 RIIIS, Complete Upper Receiver, 556NATO, 11.5″ Barrel, 1:7 Twist, Daniel Defense RIS III 10.5″ Handguard, M16 Profile Bolt Carrier Group, Anodized Finish, Black/Flat Dark Earth

Details

The DD4^™ RIII^™S AR15 style Upper Receiver Group is built around a 11.5 inch Cold Hammer Forged Government Profile barrel with a Daniel Defense Flash Suppressor, a GRIP-N-RIP Charging Handle, and our carbine length gas system.  It features a 10.5 inch lightweight RIS III rail—modeled after the revolutionary RIS II two-piece handguard developed for SOCOM— which features M-LOK attachment for lighter weight. All Daniel Defense complete upper receiver groups come standard with an M16 profile bolt carrier group.

NFA DISCLAIMER

Once this part is assembled into a complete firearm, it becomes a regulated item by the National Firearms Act (NFA). Please check with your local and state municipalities for any further regulatory requirements. It is the buyer’s responsibility to make sure they comply with all NFA rules and applicable laws.

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: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, 11.5″ Government Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI Tested
• GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Heavy Phosphate Coating, Carbine Length, Direct Impingement
• MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished
• BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key
• SIGHTS: Sold Separately
• HANDGUARD: Daniel Defense RIS III 10.5, Patented, 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum
• CHARGING HANDLE: GRIP-N-RIP Charging Handle, Body CNC Machined of 7076-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized
• Made in the USA!

Daniel Defense DD4 RIIIS Complete Upper 23-191-02397-011 Specifications

The Daniel Defense DD4 RIII S Complete Upper 23-191-02397-011 is engineered for shooters who demand exceptional performance, lightweight maneuverability, and top-tier reliability in a compact AR-15 upper receiver. This complete upper assembly features a 11.5-inch Cold Hammer Forged Government-profile barrel, optimized for suppressed shooting and close-quarters engagements.

The upper includes the Daniel Defense RIS III handguard, a free-floating, M-LOK compatible rail system that draws inspiration from the legendary RIS II used by SOCOM. Its full-length top Picatinny rail offers optimal mounting space for optics, lasers, and accessories, while the M-LOK slots enhance modularity and weight reduction. Crafted from aircraft-grade 7075-T6 aluminum, the receiver is MIL-SPEC anodized for unmatched durability in extreme environments.

Equipped with a pinned low-profile gas block and carbine-length gas system, this upper ensures smooth cycling and improved gas control, especially when used with suppressors. It’s compatible with any MIL-SPEC AR-15 lower receiver, offering plug-and-play installation for builders or professionals looking to upgrade their platform.

Daniel Defense is known for precision manufacturing and battlefield-proven reliability, and the DD4 RIII S Complete Upper 23-191-02397-011 upholds that legacy. Whether you’re a law enforcement officer, tactical shooter, or discerning enthusiast, this upper delivers uncompromising performance in a compact and agile configuration.

Daniel Defense DD4 RIII S Complete Upper 23-191-02397-011 Key Features:

• Part Number: 23-191-02397-011

• 11.5” Cold Hammer Forged Barrel (5.56 NATO)

• RIS III M-LOK Rail System

• Low-Profile Gas Block (Pinned)

• Carbine-Length Gas System

• Forged 7075-T6 Aluminum Upper Receiver

• Full-Length Picatinny Top Rail

Upgrade your AR with the Daniel Defense DD4 RIII S Upper—a combat-ready, precision-engineered solution for high-performance shooting.