This bill reenacts and amends RCW 9.41.010 and amends RCW 9.41.190, 9.41.325, 9.41.326, and 9.41.327 while adding a new section to chapter 9.41 RCW. It expands and clarifies many statutory definitions used throughout the chapter, including detailed definitions of "assault weapon," "fixed magazine," "digital firearm manufacturing code," "untraceable firearm," "undetectable firearm," "unfinished frame or receiver," "frame or receiver," and "three‑dimensional printer" and other terms. The amendments explicitly state that, for the purposes of RCW 9.41.040, "firearm" includes frames and receivers, and provide presumptions about serial‑numbered parts and ATF determinations. The bill creates or modifies criminal and civil prohibitions tied to modern manufacturing methods. It makes it unlawful to manufacture via three‑dimensional printer or CNC milling machine, own, sell, transfer, possess, assemble, or distribute machine guns, bump‑fire stocks, undetectable firearms, short‑barreled rifles and shotguns, and parts designed solely to convert weapons into those items (RCW 9.41.190), with violation classified as a class C felony. It prohibits knowingly or recklessly facilitating manufacture or assembly of undetectable or untraceable firearms, including by distributing digital firearm manufacturing code, with first violations treated as gross misdemeanors and knowing subsequent violations as class C felonies (RCW 9.41.325). It prohibits manufacturing, possessing, transporting, receiving, or transferring untraceable firearms and unfinished frames or receivers except in narrowly defined circumstances, and it prohibits sale or distribution of digital firearm manufacturing code and certain manufacturing by unlicensed persons; initial violations in RCW 9.41.326 and 9.41.327 are civil infractions ($500) escalating to misdemeanor and gross misdemeanor for repeat or aggravated conduct, with each firearm or unfinished frame treated as a separate offense. The bill also makes these violations subject to the consumer protection act (chapter 19.86 RCW) and states that failure to conduct a required background check is prima facie evidence of recklessness for certain offenses. The act adds a new section that prohibits selling, offering to sell, or transferring in Washington any three‑dimensional printer or CNC milling machine whose primary or intended function is to manufacture or assemble firearms (defined as being advertised, marketed, or promoted for that use), with specific exemptions for forensic laboratories, law enforcement transfers for destruction, common carriers transporting firearms merchandise for licensed customers, federally licensed firearms manufacturers, and government property. Violations of that new section are gross misdemeanors, with repeat knowing violations a class C felony; each device is a separate offense. The act includes an emergency immediate effective date provision and a severability clause; it also provides that Section 2 expires June 30, 2027, and Section 3 takes effect June 30, 2027. Important details are missing from the extracted facts: the full text of the amended RCW 9.41.010 "firearm" definition is incomplete, the specific contents of Sections 2 and 3 are not provided, and some referenced provisions (for example RCW 9.41.328 and the exact effective and expiration dates named in the bill header) are not included in the provided material.

If enacted, the bill would sharply restrict home or hobby production of modern firearms and the tools and digital files used to make them: making, possessing, selling, or distributing untraceable or undetectable guns, unfinished frames/receivers, and many weapon parts produced by 3D printers or CNC milling would be banned or carry criminal penalties, and selling printers or CNC machines that are advertised or marketed to make firearms would be a new criminal offense with limited exemptions for law enforcement, forensic labs, federally licensed manufacturers, common carriers transporting merchandise for licensed customers, and government property. It also makes distributing digital firearm manufacturing code to people who are not federally licensed illegal, treats violations as consumer protection violations in some places, and ties recklessness to failing to run required background checks, so sellers and people who help others make guns would face fines, misdemeanors, or felonies depending on the act and prior offenses. The groups most affected will be individuals and small businesses who print or machine firearms at home, online sellers of digital gun files, and vendors who market printers or CNC machines for gun-making; they would need to stop those activities or risk criminal and civil liability, and change how they advertise and sell those devices and files. Federally licensed gun manufacturers, law enforcement, forensic labs, carriers moving firearms for licensed customers, and government owners are largely exempt. Important implementation details are missing from the provided text—some definitions are incomplete and Sections 2 and 3 (including their precise timing and scope) are not included—so the exact start dates, enforcement procedures, and administrative responsibilities remain unclear.