no forms are needed for a suppressor all other NFA items require a form 5320 i belive. they will approve a 5320 for a can but its not needed as long as the state/states you are going to and thru allow them.
I run the standard 7.62 phantom and it is heavy on the end of a ar-15 on my ar-10 not so much. I love the fact that with the one can i run it on everything from 223,6.8,308, all the way to 300 ultra mag. It is one of the only can I have found rated for that. If I where buying today I would get...