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Daniel Defense
Overview
The Daniel Defense DD4 RIIIS Upper Receiver Group features a complete assembly with an 11.5" barrel chambered in 5.56mm NATO and utilizes a carbine length gas system. This setup is optimized for reliable cycling and provides a compact platform that balances maneuverability with performance, making it ideal for various applications including close-quarters engagements. While this upper is designed primarily for the 5.56 caliber, it is often found in builds that favor a carbine gas system, demonstrating versatility across different configurations.
Daniel Defense DD4 RIIIS 5.56mm NATO Black Upper Receiver Group w/ 11.5" Barrel & Carbine Length Gas System 23-191-02397-006
Prices checked
Builders on GunPartPicker first added the Daniel Defense DD4 RIIIS 5.56mm NATO Black Upper Receiver Group w/ 11.5" Barrel & Carbine Length Gas System 23-191-02397-006 to a build in June 2026.
It was hard to find in September 2026, in stock on only 8 of the 24 days we checked, and today only Optics Planet has it in stock. Prices barely moved in September 2026, holding around $1,454, so there haven't been real sales lately. Buying today, the lowest price is $1,527 at Optics Planet, above September's low of $1,454, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every upper receiver by how often it shows up in real builds on GunPartPicker.
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