The ARMASPEC Stealth Recoil Spring G4 is the ultimate upgrade for your firearm, delivering unparalleled performance and efficiency. This advanced recoil spring system boosts functionality while minimizing noise and wear, enhancing your shooting experience significantly. Drop-in replacement for standard buffer and spring Reduce felt recoil Prevents buffer spring from rubbing against buffer tube wall Buffer mass maintains constant tension against bolt carrier Made in the U.S.A. Experience a smoother, quieter shooting experience with the Stealth Recoil Spring G4.