RUGER Complete 5.56x45mm/.223 Remington, Black Anodized - 8516
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Ruger
Overview
The Ruger Complete Lower Receiver is an essential component for your AR-15 build, designed specifically for the 5.56 NATO caliber. This complete assembly features a hardcoat anodized finish over durable 7075-T6 aluminum, providing both strength and a sleek black appearance. It is commonly utilized in mid-length gas system builds, offering a reliable foundation for your custom firearm.
Specifications
Build history on GunPartPicker
Builders have added the RUGER Complete 5.56x45mm/.223 Remington, Black Anodized - 8516 to their builds on GunPartPicker. Since April 2026, it ranks #675 of the 1,217 lower receivers builders have added. Builds with this lower receiver are mostly chambered in 5.56 NATO (86%), mostly on mid-length gas (83%, then rifle-length 17%), and nearly all AR-15.
It was out of stock everywhere we track every time we checked in October 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $273.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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