Luth-AR AR-308 Rifle Buffer Spring
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Luth-AR
Overview
The Luth-Ar LLC AR-308 Rifle Buffer Spring is designed specifically for the AR-10 platform, offering a reliable solution for recoil management. With its rifle-length configuration, this spring ensures optimal function and cycling of the action, making it a critical component for anyone building an AR-10. You will often find this buffer spring in builds utilizing a mid-length gas system and chambered in 5.56 NATO, providing smooth operation and consistency.
Specifications
Available Merchants(7)
Prices checked
Price Alert
September 2026 on GunPartPicker
Luth-AR AR-308 Rifle Buffer Spring was the tenth most added buffer spring on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it is the sixth most added buffer spring on the site. Builds with this buffer spring are split between 5.56 NATO (53%) and .308 Win (27%), split between mid-length (57%) and carbine-length (21%) gas systems, and mostly AR-15 (78%, then AR-10 22%).
It was in stock most days in September 2026, and today 6 of the 7 retailers we track have it in stock. It dipped to $6.57 at KY Gun Company for a stretch in September 2026, under its usual $7.04, so sales do come around. Buying today, the lowest price is $6.57 at KY Gun Company, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
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ALG Defense Qms AR-15 Trigger Set
Phase 5 Tactical AR-15 90 Degree Ambi Safety Selector Black
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-308 Rifle Buffer Spring
| Build | Parts | Total |
|---|---|---|
 | 30 | $3724.95 |
 | 30 | $3724.95 |
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