If it was assembled prior 10/1 and is a heavy barrel. In MD (ignoring the GCA of 1968 which made sales illegal to those under 18) you could sell it to a kindergartner in front of Governor Martin O'Malley, Lt. Gov. Brown, and AG Gansler and all they can do is pout.
I'll be damned, I honestly did not think that was the case. Huh. Thx man