Sprinco USA Spring KIT-Std Buffer & 4-Coil Bolt Extractor Spring
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Spro USA
Overview
The Sprinco USA Spring Kit includes a standard buffer spring and a four-coil bolt extractor spring, designed specifically for the AR-15 platform. This combination enhances the reliability and function of your build by ensuring consistent buffer system operation and improved extraction of spent casings. It's often found in builds focused on reliability and smooth cycling, making it a solid choice for both tactical and competitive applications.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Spro USA Sprinco USA Spring KIT-Std Buffer & 4-Coil Bolt Extractor Spring to a build in February 2026.
Today the one retailer we track has it in stock. Buying today, the lowest price is $26.99 at Ammunition Depot.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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