Upgrade to JP Enterprises Tuned And Polished Buffer Operating Springs. JP Enterprises uses precision polishing to produce these AR15 Buffer Springs to create consistent outside diameter for more reliable action round after round. High quality construction translates to less recoil and quieter, smoother operation when you install JP Enterprises Tuned And Polished Buffer Springs. Optimize performance on your rifle with JP Enterprises Polished and Tuned Buffer Springs.  Specifications for JP Enterprises Tuned And Polished Buffer Spring: Manufacturer: JP Enterprises Color: Silver Gun Model: AR-15 Condition: New Features of JP Enterprises Tuned and Polished Buffer Spring: Precision centerless ground and polished Faster sight recovery and improved reliability Package Contents: JP Enterprises Custom Centerless Ground and Polished Buffer Spring This product is compatible with the following gun models: AR-15