I'm getting ready to order an impact action and didnt know if anyone knows for sure if a remage barrel will work on one. I was told by impact that it's the same thread size and pitch but that their threads are a class 3 thread. Not sure what a class 3 thread is. Only reason I ask if because i have a couple remage prefits sitting around that would be nice to be able to finish using and burn them up instead of trying to sell them.