Modifies provisions relating to unlawful possession of a firearm

HB 2545 makes it unlawful for specific individuals to possess firearms, including those convicted of a felony, fugitives from justice, people habitually intoxicated or mentally incompetent, or certain non-citizens (like those illegally in the U.S. or on temporary visas without federal exceptions). Violating this would typically be a class C felony, but becomes a class B felony for repeat offenders or those with prior "dangerous felony" convictions. The bill explicitly excludes antique firearms from these restrictions. It modifies existing state law to clarify who is prohibited from firearm possession and adjust penalty levels.