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Luth-AR
Overview
The Luth-Ar LLC AR-15 Mil-Spec Carbine Buffer Assembly Package includes a complete parts kit designed to work with mil-spec buffer tubes, ensuring compatibility and reliable performance in your build. The carbine buffer tube type is specifically engineered for use with carbine-length stocks, providing the necessary support for smooth cycling and recoil management. This assembly is commonly found in standard AR-15 carbine builds, making it a solid choice for builders looking for dependable functionality.
Builders on GunPartPicker first added the Luth-AR AR-15 Mil-Spec Carbine Buffer Assembly Package to a build in March 2026.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 3 of the 5 retailers we track have it in stock. It dipped to $41.51 at AT3 Tactical for a stretch in August 2026, well under its usual $47.89 to $47.99, so sales do come around. Buying today, the lowest price is $41.99 at Brownells.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every buffer tube assembly by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Tube Assembly Guide →Check it against the live catalog:
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