The JP Enterprises Silent Captured Spring System is a premium AR-15 buffer spring replacement designed to reduce noise and vibration while improving reliability and performance.JP Silent Captured Spring System for AR-15Standard configuration for most AR-15 buildsCQB stock replacement compatibilityReduces buffer spring noise and vibrationImproved cycling reliability and consistencyPrecision-engineered componentsIdeal for tactical applications precision shooting and any AR-15 build where reduced noise signature and enhanced performance are priorities.