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Luth-AR
Overview
The Luth-AR A3 Upper Receiver is a complete assembly designed for the AR-15 platform, specifically chambered in 5.56 NATO. Its A3 receiver type offers a flat-top design, providing a versatile base for attaching optics and accessories, making it an excellent choice for builders looking to create a streamlined and effective upper. This upper receiver commonly appears in a variety of builds, including tactical setups and general-purpose rifles.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Luth-AR A3 Upper Receiver Assembled Black to a build in July 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 5 of the 6 retailers we track have it in stock. The best price crept up from $105.16 to $140.95 over August 2026. Buying today, the lowest price is $105.16 at GritR Sports, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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