HB 2571 increases the minimum legal age for carrying certain weapons and expands restrictions on the unlawful transfer of firearms. The bill raises the minimum age to legally carry a location-restricted knife from 18 to 21 unless under the supervision of a parent or guardian. It also prohibits the sale or transfer of firearms, assault-style weapons, clubs, and knives to anyone younger than 21, except for transfers made to law enforcement or military personnel. Additionally, the bill creates a state jail felony offense for knowingly making false statements on firearm purchase forms while under a state or federal firearm possession ban.