Stealth™ Recoil Spring - SRS™- AR15-KIT (C, H, H2) GEN4

FEATURES: 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 Made in the U.S.A. SPECIFICATIONS: Length: 7.18"Equivalent Weight: C: 3.3 oz. H: 3.8 oz. H2: 4.7 oz.Actual Wight - Complete System (new version with stainless steel weight): C: 6.2 oz. H: 6.6 oz. H2: 7.4 oz.COMPATIBILITY: AR-15 with carbine-length buffer tubeMost bolt carriers have a rear opening of over .60″, there are a couple of bolt carriers in the market place that have a rear opening of under .60″ and will not function with the SRS.INSTALLATION AND MAINTENANCE:Before installing the recoil spring, it is always a good idea to retighten the screws using either using two 3/32 hex key and fully tightening both screws at the same time or using one 3/32 hex key and using the hole in the rod for leverage.The polymer bumper goes towards the rear of the firearm and the weight mass goes towards the bolt carrier.The SRS can be installed with our without the buffer retainer. Most people run the SRS without the buffer retainer for ease of maintenance.