Armaspec Gen4 AR-15 Multi-Stage Stealth Recoil Spring- Big Bore 5.7 oz

The Stealth Recoil Spring SRS GEN4 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.

Please Note: The new GEN4 version does not have the O-ring on the weight. To eliminate any potential failure points ARMASPEC changed the screw to a roll pin across the plastic end piece and the cap is machined on the rod replaced the snap ring with a washer.

Features:

• For Big Bore Caliber such as .458 Socom/.450Bushmaster/.50 Beowulf
• 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
• Compatibility: AR-15 with carbine-length buffer tube
• Equivalent Weight: BB/Big Bore: 5.7 oz.
• Actual Weight:  BB/Big Bore: 7.5 oz. (new version with stainless steel weight)
• Made in the U.S.A.
• Length: 7.18″

Manufacturer Notes:

• The SRS comes with Red LOCTITE on the front metal stop and Blue LOCTITE for the bottom bumper when reassembling we recommend reapplying LOCTITE. The SRS can be installed with or without a buffer retainer.
• The polymer bumper goes towards the rear of the firearm and the weight mass towards the bolt carrier.
• Most bolt carriers have a rear opening of over .60″, there are a couple of bolt carriers in the marketplace that have a rear opening of under .60″ and will not function with the SRS.