Daniel Defense DD4 RIII URG | 5.56 NATO | 16″

The Daniel Defense DD4 RIII URG complete upper receiver couples a 16″ cold-hammer-forged Government-profile barrel with a mid-length gas system designed for a smoother recoil impulse. A 12.5″ RIS III free-floating M-LOK rail provides modular attachment points while reducing weight. The upper ships with an ambidextrous GRIP-N-RIP charging handle and an M16-profile bolt carrier group for immediate use on standard AR-style lower receivers. Typical applications include competitive shooting and dedicated range training.

Product Specifications

• The manufacturer is Daniel Defense.
• The model is DD4 RIII URG.
• The caliber is .223 Rem/5.56 NATO.
• The barrel measures 16″ Government profile and uses a mid-length gas system.
• The barrel material is 4150 Chrome Moly Vanadium and it is cold hammer forged.
• The barrel profile is Government.
• The rifling twist is 1:7″.
• The gas system length is Mid-length and operates by direct impingement.
• The muzzle device is a Daniel Defense flash suppressor (17-4 PH stainless, salt bath nitride).
• The bolt carrier group is a M16 profile, mil-spec, chrome-lined BCG.
• The handguard is a RIS III 12.5-inch M-LOK free-floating rail.
• The charging handle is a GRIP-N-RIP ambidextrous charging handle.
• The upper receiver is mil-spec 7075-T6 aluminum with Type III hard coat anodize.
• The muzzle thread pattern is 1/2×28.
• The UPC is 818773022996.

This complete upper receiver provides a durable, match-capable foundation for building a modern AR platform. Its combination of a cold-hammer-forged barrel, mid-length gas system and a lightweight RIS III M-LOK rail makes it suitable for shooters who prioritize consistent performance and modularity on the range or in competition.