Break Free is all I've ever used in my AR15s, and as I recall while actively competing that was about 25 barrels we've gone through... never had an issue, with or without moly. Cleans fine, accurate, and never rusted that I am aware of. Standard barrel life.

Jeff

We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....