Armaspec SRS-BB Stealth Recoil Spring Big Bore Gen 4 Silver/Black 5.7 oz AR-15

The Armaspec Stealth Recoil Spring (SRS) is a self-contained, multi-stage drop-in replacement for the standard buffer and buffer spring in AR-15 carbine-length receiver extensions. The Big Bore (BB) configuration of the Gen 4 SRS is built for larger-caliber AR-platform builds and is also at home in AR-10 rifles and pistols running heavy rounds.

Designed to reduce felt recoil and eliminate spring-rub noise, the SRS captures the recoil spring inside a sealed, two-piece housing so the spring can no longer chirp against the buffer tube wall. The Big Bore version is rated at an equivalent buffer weight of 5.7 oz, with an actual installed weight of 7.5 oz and an overall length of 7.18". The unit drops directly into a standard carbine buffer tube in place of the factory buffer and spring - no permanent modification required - and is finished in a silver and black two-tone.

Key features include:

• Drop-in replacement for standard AR-15 carbine buffer and spring
• Captured, multi-stage spring design keeps the spring from rubbing the buffer tube
• Reduces felt recoil and unwanted operating noise
• Big Bore (BB) tuning for larger-caliber AR-15 / AR-10 applications
• Equivalent weight: 5.7 oz | Actual weight: 7.5 oz
• Overall length: 7.18"
• Generation 4 design with silver/black finish