So a friend of a friend I know is selling his caa roni g2 pistol to Carbine conversion kit. At a very good price, and barley used, Now I’ve been trying to do some research on these things and the one he has has a actual stock on it, not the brace. And there seems to be a lot of different kinds of RONIs too. So I’m guessing that if I have my Glock and that thing in the same place, it’s big trouble in little china. Is it possible to take stock off and put a brace on? So I don’t have to pay an extra 200 dollars to the government? And I’m guessing it becomes nfa when you put the two together but apart it’s just a firearms accessory?