Having the barrel threaded hasn't escaped me, but I thought I read in some BTAF that if you added a muzzle device to a rifle which wasn't originally manufactured with a threaded barrel the device had to be welded or soldered on. If threading is legal I'll certainly consider it.If a threaded muzle device wont slip over .Thats an indication it will accept threads .I would have it threaded.
Lucky for me here in Kentucky we pretty much don't mess with the second amendment. The only local laws in Kentucky is that some cities have ordances against discharging firearms with in the city limits. So I'm alright with the locals I just need to make sure I comply with the Feds.Check your local laws before you thread anything.