Standard spec replacement spring helps keep your carbine cycling smoothly.
This replacement buffer spring can fix cycling problems caused by spring fatigue. Made of high-grade coil spring steel that retains full elasticity over thousands of compression cycles to help ensure your rifle keeps running smoothly.
If your rifle starts to have cycling problems with the ammunition it used to like, even after a thorough cleaning, replacing the inexpensive recoil spring may be the only fix required to get it running again. For use only in M4 carbine type receiver extensions.