The proposed bill seeks to establish comprehensive state standards for the labeling and regulation of imitation firearms sold in Washington state. It amends existing definitions in RCW 9.41.010, introducing new terms such as "BB device" and "imitation firearm," which includes BB devices, toy guns, and replicas resembling real firearms. The bill clarifies that nonfiring collector's replicas and spot marker guns that expel larger projectiles are excluded from the definition of imitation firearms. Additionally, it updates definitions for terms like "conviction," "crime of violence," and "large capacity magazine," specifying that the latter refers to ammunition feeding devices holding more than ten rounds, with certain exceptions.

Moreover, the bill redefines several firearm-related terms and introduces new definitions, including "serious offense," "short-barreled rifle," and "undetectable firearm." It establishes responsibilities for manufacturers, importers, and distributors of imitation firearms, including penalties for altering required markings and mandates advisories about potential confusion with real firearms. The legislation imposes civil fines for non-compliance, with escalating penalties for repeated violations, and allows for the manufacture and distribution of imitation firearms under specific conditions, such as for theatrical productions. Overall, the bill aims to enhance public safety by regulating the appearance and distribution of imitation firearms while providing clearer definitions within firearm laws.