Made specifically for the box magazines of the AR-10 and/or AR-15, this bullet is made with a pure copper jacket and pure lead core. It is skived to 75% of the ogive to enhance expansion to your loads. It stands up to the rigors of auto-loading with sturdy construction yet yields impressive expansion. Expect delivery by the end of the month following the month purchased in. When inventory is exhausted, back orders are taken and filled in the order they were received.