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
August 2026 on GunPartPicker
Luth-AR AR-15 Buffer Tube Assembly ranked #21 of the 48 buffer tubes builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #15 of the 63 buffer tubes builders have added. Builds with this buffer tube are split between 5.56 NATO (58%) and 6mm ARC (17%), mostly on rifle-length gas (75%, then mid-length 13%), and mostly AR-15 (92%, then AR-10 8%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 7 of the 8 retailers we track have it in stock. The best price crept up from $45.10 to $48.83 over August 2026. Buying today, the lowest price is $48.83 at Brownells, above August's low of $45.10, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 59 builds that include this one
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CMMG AR15 Ambi Mag Catch, Black - 55AFF6E
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 2 →Builds in the community that include the Luth-Ar Llc Ar-15 Buffer Tube Assembly
| Build | Parts | Total |
|---|---|---|
 | 24 | $1643.64 |
 | 20 | $1187.57 |
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