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Firearm law reference

Washington Firearm Laws

A plain-English overview of the firearm rules most relevant to buying and selling in Washington — private-sale background checks, restricted-firearm and magazine rules, handgun roster, and waiting periods. Federal law applies everywhere on top of these state rules.

At a glance

Universal background check on private sales
Yes
Assault-weapon restrictions
Yes
Large-capacity magazine limit
Magazines over 10 rounds are typically restricted.
Yes
Approved-handgun roster (dealers)
No
Waiting period
About 10 days before transfer
Yes

What to watch for

Washington requires private firearm transfers to go through a licensed dealer (background check).
Interstate transfers must ship to a licensed dealer (FFL) in the buyer's state for the background check; a private buyer can't take a handgun across state lines.
Washington restricts large-capacity magazines (typically over 10 rounds).
Washington restricts "assault weapons" — certain semi-automatic rifles and features may be prohibited.
Washington has a waiting period (about 10 days) before a firearm can be received.
Never transfer to a prohibited person or complete a straw purchase (buying for someone else) — both are federal crimes.
General information, not legal advice. Firearm laws change frequently and city or county ordinances may add requirements this summary doesn't capture. Verify the current law with the Washington Attorney General or state police and consult a licensed attorney before any transfer. Last reviewed 2026-06-26.

Frequently asked

Does Washington require a background check for private firearm sales?+

Yes. Washington requires private firearm transfers to go through a licensed dealer (FFL), who runs the background check.

Does Washington restrict "assault weapons"?+

Yes. Washington restricts certain semi-automatic rifles and features classified as "assault weapons." Confirm a specific model and configuration is permitted before buying or selling.

Are magazine-capacity limits in effect in Washington?+

Yes. Magazines over 10 rounds are typically restricted.

Is there a waiting period to receive a firearm in Washington?+

Washington has a waiting period of about 10 days before a firearm can be received.

Buying or selling in Washington?

Rangium shows these state-specific notes right on every listing, and Vanta can answer compliance questions against your own inventory. Rangium is a neutral listings venue — it never processes payment or ships firearms.

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