IL SB3566

Increases the age threshold in Illinois firearm storage laws from under 14 years to under 16 years for minors without a Firearm Owner's Identification Card.

Applies the stricter storage requirement when a person knows or has reason to believe a minor under 16 is likely to gain unauthorized access to a firearm and could cause death or great bodily harm.

Permits three methods of secure storage: a locking device other than the firearm safety, a securely locked box or container, or another location a reasonable person would consider secure from a minor under 16.

Sets penalties as a Class C misdemeanor with a minimum $1,000 fine for first violation, and a Class A misdemeanor for second or subsequent violations.

Exempts violations when a minor uses a firearm in lawful self-defense or defense of another, or when a firearm is obtained through unlawful entry of the premises.