Sprinco USA AR-15 4-Coil Extractor Spring Upgrade Kit, 3-Pack

About this product

```html Upgrade Your AR-15’s Reliability with Sprinco’s 4-Coil Extractor Spring Kit Extractor spring failures are a common cause of malfunctions in AR-15 platforms, especially under high-volume shooting. Sprinco’s 4-Coil Extractor Spring Upgrade Kit reinforces your bolt’s extraction system with a precision-engineered spring designed for consistent tension and longevity. This 3-pack ensures you have spares on hand for maintenance or multiple builds. Ships to all 50 states with no restrictions. Key Specifications Material: Heat-treated chrome silicon steel Design: 4-coil configuration (vs. standard 3-coil) Compatibility: Fits mil-spec AR-15/M16 bolts Quantity: 3 springs per pack Finish: Corrosion-resistant coating Why Upgrade Your Extractor Spring? The extractor spring is critical for maintaining consistent cartridge grip during the ejection cycle. Factory springs often weaken over time, leading to failures to extract (FTEs) or erratic ejection patterns. Sprinco’s 4-coil design increases tension by approximately 20% over mil-spec springs, reducing the risk of malfunctions during rapid fire or adverse conditions. Chrome silicon steel provides superior fatigue resistance compared to standard music wire springs. This material choice ensures the spring retains its tension through thousands of cycles, making it ideal for competitive shooters or those running suppressed setups where backpressure increases wear on bolt components. The 3-pack configuration offers practical value. Extractor springs are small, easy to lose during maintenance, and degrade with use. Having spares in your range bag or workshop prevents downtime when servicing multiple rifles or assisting fellow shooters. Unlike aftermarket extractor kits that require modifying your bolt, this drop-in spring maintains compatibility with existing components. No gunsmithing is needed—just remove the old spring and insert Sprinco’s upgrade during routine cleaning. Compatibility Notes Designed for mil-spec AR-15 and M1