Sons of Liberty Gun Works AR-15 Buffer Retainer Spring
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Sons of Liberty Gun Works
Overview
The Sons of Liberty Gun Works AR-15 Buffer Retainer Spring is a critical component designed to securely hold the buffer in place within the receiver extension of your AR-15. This spring provides the necessary tension to ensure that the buffer operates smoothly during the cycling process, which is essential for reliable function in your build. It is commonly found in builds with a carbine gas system and chambered for 5.56 NATO, making it an ideal choice for standard AR-15 configurations.
Specifications
September 2026 on GunPartPicker
Sons of Liberty Gun Works AR-15 Buffer Retainer Spring ranked #33 of the 57 buffer springs builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #49 of the 97 buffer springs builders have added. Builds with this buffer spring are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today all 3 retailers we track have it in stock. The best price crept up from $2.29 to $3.79 over September 2026. Buying today, the lowest price is $2.29 at Palmetto State Armory, 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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