Just a word of caution here. If you plan on using Wolff ammo in an AR 15, I would advise against it. I had about 4 rounds out of around 500 that the cartridge case actually stuck in the chamber, and I had to get it out with a cleaning rod. I also seen this happen to two of my buddies one day at the range. I thought it was just because these two like to shoot their ARs as fast as they can pull the trigger, and maybe they are not as picky about cleaning as I was, but then it happened to me as well. Now, I know to some of you having 4 rounds out of 500 do that may not be a big deal, but we are not talking about a simple jam that could be cleared easily, we are talking about the case actually sticking in the chamber and disabling the gun. Could be a serious situation if you really needed the dang thing. My ARs, by the way, have never jammed once with my reloads. Now, Wolff in an AK or SKS is fine.