The Daniel Defense DD4 RIII Upper Receiver Group (brand part number 23-191-20088-006) is a 16-inch upper built on Daniel Defense’s DD4 platform, finished in black. At 16 inches, this barrel meets the federal rifle minimum with no NFA paperwork required. It ships with no sights, giving the buyer a clean slate to run their own optic and backup irons. This is an upper receiver group only, with no lower receiver included.

Key Specifications

• Chambered in .223 Rem/5.56 NATO, the standard AR-15 caliber with wide ammunition availability.
• Barrel length measures 16 inches, meeting the federal rifle minimum with no NFA paperwork required.
• Rate of twist is 1-in-7, matched to a wide range of .223/5.56 bullet weights.
• Sights are not included, leaving the top rail clear for the buyer’s own optic and backup irons.
• Configuration is Daniel Defense’s Accessory-Uppers product line, built as a complete drop-in upper group.
• Finish is black, a durable, classic finish for a hard-use upper.

Frequently Asked Questions

Does this barrel length have any NFA restrictions? No, at 16 inches this barrel meets the federal rifle minimum, so no ATF paperwork is required.

Is this a complete rifle? No, this is an upper receiver group only with no lower receiver included. It ships without an FFL transfer and needs a compatible AR-15 lower to complete a rifle.

What does URG mean? URG stands for Upper Receiver Group, meaning the barrel, bolt carrier group, and handguard ship assembled as one unit ready to mate to a compatible lower.

Buy the Daniel Defense DD4 RIII URG, 16in, Black

This upper will ship as soon as it’s available from a Lubbock, Texas gun shop for your next AR build. Browse more gun parts and accessories in our gun parts inventory.