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Ghost gun ban among changes in new Washington state gun laws

OLYMPIA, Wash. (AP) — New gun regulations taking effect in Washington state include a ban on undetectable guns made using 3D printers.

The Seattle Times reports that a law against so-called "ghost guns" takes effect Monday, along with components of a previously instituted law raising the legal purchase age for some guns.

A law passed in January raises the purchase age for semi-automatic rifles to 21.

Additional clauses taking effect Monday include enhanced background checks for semi-automatic rifle buyers and a safe gun-storage provision.

A gun owner could be charged with community endangerment if a firearm is accessed and used by someone who is not allowed to possess it, such as a child or a felon.

Gun-rights advocates have filed a legal challenge against the initiative's age restriction for semi-automatic rifles.

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