An Act Requiring Serial Numbers On Firearms And Prohibiting Undetectable Firearms

LD 1126 requires firearms dealers in Maine to permanently mark all firearms they sell with unique serial numbers. It also bans the manufacture, sale, possession, or transfer of "undetectable firearms" (defined as weapons undetectable by standard security scanners under federal law). Violations carry criminal penalties, with stricter charges for possessing such weapons near schools, courthouses, polling places, or government buildings. The law applies directly to firearms dealers and anyone handling undetectable firearms.