Luth-AR AR-15 Carbine Buffer Spring
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Luth-AR
Overview
The Luth-Ar LLC AR-15 Carbine Buffer Spring is designed specifically for the AR-15 platform and features a carbine length that ensures optimal performance in your build. This spring plays a crucial role in the cycling of the action, providing the necessary tension to the buffer and helping to manage recoil by returning the bolt carrier group to battery smoothly. You'll often find this component in builds utilizing a carbine gas system, particularly those chambered in 5.56 NATO, where reliable function is essential.
Specifications
Available Merchants(8)
Prices checked
Price Alert
October 2026 on GunPartPicker
Luth-AR AR-15 Carbine Buffer Spring ranked #20 of the 52 buffer springs builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #23 of the 116 buffer springs builders have added. Builds with this buffer spring are mostly chambered in 5.56 NATO (81%), split between carbine-length (58%) and mid-length (33%) gas systems, and mostly AR-15 (94%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 8 retailers we track have it in stock. Prices barely moved in October 2026, holding around $4.69, with no real sale all month. Buying today, the lowest price is $4.69 at Palmetto State Armory, 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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Frequently Built With
The part most often added in each category by the builds that include this one
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AR-15 Forged M4 Upper Receiver 5.56mm - AR-15 Forged M4 Stripped Upper Receiver
TPS Arms AR-15 Mag Catch Assembly, Black - AR-1031
Radian Weapons Talon Ambidextrous Safety Selector 2-Lever KIT - Radian Grey
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 Carbine Buffer Spring
| Build | Parts | Total |
|---|---|---|
 | 27 | $958.31 |
 | 28 | $1406.32 |
 | 27 | $2253.63 |
 | 21 | $658.17 |
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