The bill establishes the crime of unlawful storage of firearms and outlines specific requirements for the secure storage of various types of firearms, including rifles, shotguns, and stun guns. It mandates that firearms must be stored in a locked container or equipped with a tamper-resistant lock to prevent unauthorized access, particularly by individuals under 18 years of age. Violations of these storage requirements are classified as either a class A nonperson misdemeanor or a level 9 nonperson felony, depending on the type of firearm involved. Additionally, the bill stipulates that evidence of reckless conduct may be presented in civil or criminal proceedings if a minor gains access to a weapon and causes injury or death.

The bill also includes exceptions for certain antique firearms manufactured before 1899 and defines "large-capacity magazine" as any magazine that holds more than 10 rounds of ammunition. Overall, the legislation aims to enhance firearm safety and reduce the risk of unauthorized access to firearms by minors.