Armaspec ARM253-AR10 SRS-AR10 Recoil Spring 9mm Luger Silver AR-10 Gen4

The Stealth Recoil Spring SRS GEN3 is a self-contained multi-stage drop-in replacement for your standard buffer and spring. The SRS is designed to keep the buffer spring from rubbing against the inner wall of the buffer tube providing smooth, quiet operation and the second stage helps reduce the felt recoil significantly.