Luth-AR AR-15 Buffer Tube Assembly
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Luth-AR
Overview
The Luth-Ar LLC AR-15 Buffer Tube Assembly is a complete parts kit designed for building a reliable rifle platform. Featuring a Mil-Spec buffer tube, this assembly is crafted from durable 7075-T6 aluminum and finished with a nitride coating for enhanced longevity and resistance to wear. This buffer tube is specifically designed for rifle-length gas systems, making it an ideal choice for builds chambered in 5.56 NATO.
Specifications
Available Merchants(8)
Prices checked
Price Alert
October 2026 on GunPartPicker
Luth-AR AR-15 Buffer Tube Assembly ranked #16 of the 40 buffer tubes builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #16 of the 71 buffer tubes builders have added. Builds with this buffer tube are split between 5.56 NATO (51%) and .308 Win (10%), mostly on rifle-length gas (61%, then mid-length 18%), and mostly AR-15 (82%, then AR-10 18%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 7 of the 8 retailers we track have it in stock. Buying today, the lowest price is $46.99 at Ammunition Depot, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Read the guide: AR-15 Buffer Tube Guide →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with 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.
Builds Featuring This Part
See all builds →Builds in the community that include the Luth-Ar Llc Ar-15 Buffer Tube Assembly
| Build | Parts | Total |
|---|---|---|
 | 24 | $1680.88 |
 | 20 | $1225.79 |
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