BUFFER TUBE KITS

The AR15 buffer tube houses the AR15 buffer and the AR15 buffer spring.  Together, the buffer system absorbs the recoil from the fired round and returns the bolt carrier to battery, feeding a live round from the magazine as it moves forward.  The standard AR15 buffer tube assembly works for most calibers, but adjustments to buffer weight or buffer spring length can improve the performance of some builds.


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