relative to the possession of a firearm without a serial number.

SB 466 makes it a class A felony to alter, remove, or destroy identifying marks (such as the maker's name, model, or serial number) on any firearm. Possessing a firearm with such altered marks is considered evidence that the possessor made the changes. This law directly affects individuals who modify firearm markings or possess firearms with altered identification, raising penalties from a misdemeanor to a felony. The bill takes effect on January 1, 2027.