Introducing the Primary Arms Exclusive Daniel Defense DD4 RIII Upper Receiver, featuring an 11.5" Cold Hammer Forged barrel and a durable black finish. This upper assembly is designed for reliability and performance, built around a government profile barrel with a carbine-length gas system, BCG, A2 flash hider, and GRIP-N-RIP charging handle.

Features:

• 11.5" barrel chambered in 5.56 NATO
• CHF 4150 Chrome Lined barrel with heavy phosphate coating
• High-pressure tested and magnetic particle inspected
• Carbine-length gas system
• A2 flash hider
• Bolt Carrier Group
• 10.5" RIS III M-LOK handguard, black
• Ambidextrous Grip-N-Rip charging handle
• Made in the USA

With a 10.5" RIS III handguard modeled after the SOCOM RIS II, this upper offers M-LOK slots for lightweight, modular customization. The Mil-Spec upper receiver includes M4 feed ramps and indexing marks, and the 1:7 twist Chrome Moly Vanadium Steel barrel ensures consistent accuracy. Made in the USA, it's designed for those who prioritize durability and top-tier performance.

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