No place.Where in the law does it actually define what an HBAR is and that it must be stamped as such?
Maryland Public Safety Section 5-101
Article - Public Safety§ 5-101.
(p) "Regulated firearm" means:
(1) a handgun; or
(2) a firearm that is any of the following specific assault weapons or their copies, regardless of which company produced and manufactured that assault weapon:
....
(xv) Colt AR-15, CAR-15, and all imitations except Colt AR-15 Sporter H-BAR rifle;
Just for fun- read this...