Sprinco Usa197559410
Sprinco Usa Spring Kit-Buffer Enhanced 4-Coil Bolt Extractor Spring$24.70
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Availability: In Stock
Current Stock: Out of stock
The Sprinco USA Spring Kit pairs an enhanced buffer spring with a 4-coil bolt extractor spring—a combo tuning solution for AR-platform rifles that demand reliable cycling across a range of loads and gas port configurations. If you're running a modern piston upper, a precision build, or a short-barreled carbine that needs consistent extraction and spring performance, this kit addresses the real variability you encounter in the field. The enhanced buffer spring delivers approximately 15% greater design load than standard offerings, designed to handle high-performance applications where stock springs leave you short on reliability.
This isn't a one-size-fits-all fix—it's a tuning component. Different AR builds, gas port sizes, and ammunition loads all play a role in how your rifle cycles. The enhanced spring in this kit was developed in response to feedback from serious shooters and gunsmiths who needed more spring force to keep up with demanding platforms. Whether you're working with a 14.5" to 16" carbine length gas system or stepping up the performance threshold on your current setup, having the right spring rate is foundational to smooth feeding and reliable function.
The kit includes both the enhanced buffer spring and a 4-coil bolt extractor spring, giving you the core components needed for a spring system refresh or upgrade. Like any tuning part, results depend on your specific rifle configuration—barrel length, gas port size, ammunition, and buffer weight all interact with spring rate. We recommend consulting Sprinco's tuning procedure documents to dial in your exact setup, or reach out if you have questions about fit for your platform.
The enhanced blue spring in this kit delivers approximately 15% greater design load than standard white springs, enabling more consistent cycling in high-performance builds and platforms with larger gas ports or demanding ammunition profiles.
This kit was developed with modern carbine builds in mind, including 14.5" to 16" barrel lengths with carbine-length gas systems. However, results depend on your specific gas port size, ammunition, and overall build configuration. Consult Sprinco's tuning documents or contact us if you're unsure about fit for your platform.
The kit includes an enhanced buffer spring and a 4-coil bolt extractor spring—the two main spring components for a complete AR-platform spring system refresh.
Spring rate and buffer weight work together to tune cycling. Contemporary builds often pair the enhanced blue spring with an H2 or ST-T2 buffer, but your optimal setup depends on your specific rifle, gas port, and ammunition. Refer to Sprinco's tuning documents for recommendations tailored to your build.
SKU: 197559409 • Weight: 0.16oz
Availability: In Stock
Current Stock: Out of stock
The Sprinco USA Spring Kit pairs an enhanced buffer spring with a 4-coil bolt extractor spring—a combo tuning solution for AR-platform rifles that demand reliable cycling across a range of loads and gas port configurations. If you're running a modern piston upper, a precision build, or a short-barreled carbine that needs consistent extraction and spring performance, this kit addresses the real variability you encounter in the field. The enhanced buffer spring delivers approximately 15% greater design load than standard offerings, designed to handle high-performance applications where stock springs leave you short on reliability.
This isn't a one-size-fits-all fix—it's a tuning component. Different AR builds, gas port sizes, and ammunition loads all play a role in how your rifle cycles. The enhanced spring in this kit was developed in response to feedback from serious shooters and gunsmiths who needed more spring force to keep up with demanding platforms. Whether you're working with a 14.5" to 16" carbine length gas system or stepping up the performance threshold on your current setup, having the right spring rate is foundational to smooth feeding and reliable function.
The kit includes both the enhanced buffer spring and a 4-coil bolt extractor spring, giving you the core components needed for a spring system refresh or upgrade. Like any tuning part, results depend on your specific rifle configuration—barrel length, gas port size, ammunition, and buffer weight all interact with spring rate. We recommend consulting Sprinco's tuning procedure documents to dial in your exact setup, or reach out if you have questions about fit for your platform.
The enhanced blue spring in this kit delivers approximately 15% greater design load than standard white springs, enabling more consistent cycling in high-performance builds and platforms with larger gas ports or demanding ammunition profiles.
This kit was developed with modern carbine builds in mind, including 14.5" to 16" barrel lengths with carbine-length gas systems. However, results depend on your specific gas port size, ammunition, and overall build configuration. Consult Sprinco's tuning documents or contact us if you're unsure about fit for your platform.
The kit includes an enhanced buffer spring and a 4-coil bolt extractor spring—the two main spring components for a complete AR-platform spring system refresh.
Spring rate and buffer weight work together to tune cycling. Contemporary builds often pair the enhanced blue spring with an H2 or ST-T2 buffer, but your optimal setup depends on your specific rifle, gas port, and ammunition. Refer to Sprinco's tuning documents for recommendations tailored to your build.
SKU: 197559409 • Weight: 0.16oz