Thanks for the heads up. I had to reread their write up. Their website does not recommend using a AR Platform due to possible light primer strikes. They do mention that it is possible if a modification is done to your firing pin, this applies to AR, AK is ok.Just note that per the add it does work all that great in ar15 and that you should keep a eye on the chamber for build up of the purple primer paint not really a issue with semi auto guns but something to look into