Sprinco USA M4 Carbine Reduced Power Buffer Spring
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Spro USA
Overview
The Sprinco USA M4 Carbine Reduced Power Buffer Spring is designed specifically for the AR-15 platform, offering a reduced power option that enhances the cycling of your firearm. With a carbine length, this spring helps to mitigate recoil and improve reliability, especially in builds that utilize a carbine gas system. This buffer spring is typically found in 5.56 NATO caliber configurations, making it a solid choice for those looking to optimize their lightweight builds.
Specifications
Available Merchants(6)
Prices checked
Stock Alert
October 2026 on GunPartPicker
Spro USA Sprinco USA M4 Carbine Reduced Power 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 #28 of the 116 buffer springs builders have added. Builds with this buffer spring are split between 5.56 NATO (50%) and 300 Blackout (44%), split between pistol-length (54%) and carbine-length (23%) gas systems, and nearly all AR-15.
It was out of stock everywhere we track every time we checked in October 2026, and today none of the 6 retailers we track has it in stock right now. Listed prices start at $19.58 at BattleHawk Armory for when it comes back.
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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SB Tactical SBA3 5 Position Adjustable Arm Brace Buffer Tube Not Included, Black - SBA3X-01-SB
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use 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 Sprinco Usa M4 Carbine Reduced Power Buffer Spring
| Build | Parts | Total |
|---|---|---|
 | 29 | $3925.93 |
 | 27 | $3494.92 |
 | 16 | $952.70 |
 | 27 | $3267.30 |
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