The Stealth Recoil Spring™ SRS™ 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. 

• Drop-in replacement for standard buffer and spring
• Reduce felt recoil
• Keep the buffer spring from rubbing against the inner wall of the buffer tube
• Buffer mass is designed to stay under constant tension against the bolt carrier
• Rubber O-ring on the head of the buffer mass prevents metal on metal contact
• Made in the U.S.A
• Length: 7.18"
• Compatibility: AR-15 with carbine-length buffer tube