I believe under US rules and ATF interpretations, that a permanently affixed muzzle device does NOT count towards barrel length.
I'm going strictly on memory here though, I can't recall where I read it.
On a side note, make sure your lower is legal, Norinco is not permitted
thanks kanook for that document. seems to me that permanently attachedis gtg for americans, now does it apply to us canadians?
But as a canadian going to the Us, wich way do they measure the barrel? Rcmp-style or the american way?



























