Daniel Defense - DD4™ RIII™S 11.5" Upper Receiver Group, Black or FDE

The DD4™ RIII™S Upper Receiver Group is a compact and robust AR15-style upper built around an 11.5-inch Cold Hammer Forged Government Profile barrel and carbine-length gas system for reliable performance. Featuring a lightweight 10.5-inch RIS III rail with M-LOK compatibility, this upper is designed for users who demand both durability and agility.

• Upper Receiver: Mil-Spec with indexing marks and M4 feed ramps, CNC machined from 7075-T6 aluminum and Type III hard coat anodized for long-lasting resilience.
• Barrel: 11.5-inch Government Profile, Cold Hammer Forged from Chrome Moly Vanadium Steel with 1:7 twist, chrome-lined, and heavy phosphate coated.
• Gas System: Carbine-length, direct impingement with a pinned low-profile gas block made from 4140 hardened steel.
• Muzzle Device: Daniel Defense Flash Suppressor crafted from 17-4 PH Stainless Steel with a salt bath nitride finish for enhanced durability.
• Bolt Carrier Group: M16 Profile, chrome-lined and properly staked gas key for enhanced reliability.
• Handguard: Lightweight 10.5-inch RIS III with M-LOK attachment, CNC machined from 6061-T6 aluminum, featuring a patented 6-bolt bolt-up system for secure mounting.
• Charging Handle: GRIP-N-RIP Charging Handle made from 7075-T6 and 6061-T6 aluminum, designed for heavy-duty use.

NFA Disclaimer: Once assembled into a complete firearm, this part becomes regulated by the National Firearms Act (NFA). Please check local and state regulations for compliance with NFA rules.

Specifications:

• Mounting System: M-LOK
• Caliber: 5.56mm NATO
• Gas System: Carbine
• Barrel Length: 11.5 inches
• Barrel Profile: Government
• Weight: 3.7 lbs

Made in the USA!