An AR15 H3 buffer (heavy carbine) will help cycle AR's. Can be used with a standard carbine AR15 spring and is an easy and inexpensive upgrade for your AR-15. A heavier buffer slows the speed of the bolt during recoil. This smooths out the felt recoil and allows more time for the next round from the magazine.

Weight 5.482 oz | 0.35 lbs.