Washington’s Mini-14 laws come down to configuration, not brand. A standard Ruger Mini-14 Ranch Rifle with a fixed stock and a bare muzzle is legal to buy in Washington. A Mini-14 fitted with a pistol grip, folding or telescoping stock, thumbhole stock, flash hider, muzzle brake, threaded barrel, or barrel shroud is a banned assault weapon under RCW 9.41.390, even though the Mini-14 is not listed by name.1Washington State Legislature. Washington Code Chapter 9.41 RCW – Firearms and Dangerous Weapons If you already owned a restricted version before April 25, 2023, you can keep it, but you cannot sell or give it away inside the state.
Which Mini-14 Configurations Are Legal to Buy
Washington’s assault weapons law does two things at once. It bans specific firearms by name (the AR-15, AK-47, and dozens of others), and it applies a features test to every other semi-automatic, centerfire rifle that accepts a detachable magazine.2Washington State Legislature. House Bill 1240 The Mini-14 is not on the named list, so the features test decides it.
Any single one of these features makes a detachable-magazine semi-auto rifle a banned assault weapon:
- A pistol grip that protrudes beneath the action
- A thumbhole stock
- A folding or telescoping stock
- A forward grip (vertical, angled, or otherwise)
- A flash hider, flash suppressor, or sound suppressor
- A muzzle brake or recoil compensator
- A threaded barrel
- A barrel shroud
- A grenade or flare launcher
A separate rule bans any semi-automatic rifle with an overall length under 30 inches, regardless of features.1Washington State Legislature. Washington Code Chapter 9.41 RCW – Firearms and Dangerous Weapons
The standard Ranch Rifle passes. It ships with a fixed wood or synthetic stock, no pistol grip, and a plain muzzle. Ruger’s Tactical Mini-14 does not pass. It typically comes with a flash hider and, in some versions, a threaded barrel. Either feature alone is disqualifying. If a dealer has a Mini-14 on the wall with any muzzle device or a collapsible stock, it cannot legally be sold to you in Washington.
The same logic applies after you take the rifle home. Screwing a flash hider onto a legal Ranch Rifle, or swapping the factory stock for a folding one, converts a legal rifle into a banned assault weapon. Keep it stock.
If You Already Owned a Restricted Mini-14h2>
Owners who legally had a Mini-14 in any configuration before April 25, 2023, the day the governor signed HB 1240, can keep it.2Washington State Legislature. House Bill 1240 There is no registration requirement and no obligation to notify law enforcement. You can continue using a grandfathered rifle for hunting, target shooting, and other lawful purposes.
Keeping proof of when you acquired it is worth doing. A receipt, an FFL transfer record, or a dated photo helps establish that the rifle predates the cutoff.
Where grandfathered ownership gets restrictive is transfer. You cannot sell or give a restricted Mini-14 to another person in Washington. The only in-state transfer the statute allows is by operation of law when the owner dies, meaning through a will or intestate succession.3Washington State Legislature. Washington Code RCW 9.41.390 – Assault Weapons, Manufacturing, Importing, Distributing, Selling Prohibited, Exceptions, Penalty The heir is then bound by the same limits: they cannot resell it inside Washington except to a licensed dealer, to a federally licensed gunsmith for repair, or to a law enforcement agency for permanent relinquishment.
The one exit ramp the law preserves is an out-of-state sale through a dealer. A licensed Washington dealer can take possession of your grandfathered rifle for the purpose of transferring it to a buyer outside the state.
Magazine Rules That Affect Mini-14 Owners
Separate from the assault weapons ban, Washington prohibits the sale, distribution, and importation of magazines that hold more than 10 rounds under RCW 9.41.370. The Mini-14 has long been sold with 5-, 20-, and 30-round magazines, so most owners run into this rule directly.4Washington State Legislature. Washington Code RCW 9.41.370 – Large Capacity Magazines
Magazines over 10 rounds that you owned before the 2022 effective date can be kept, but not sold or transferred to anyone else in Washington. Their lawful use is limited to your own property, licensed shooting ranges, and lawful outdoor activities such as hunting. In between those places they must be transported unloaded and in a separate locked container.5Washington State Legislature. Senate Bill Report SB 5078
Violating the magazine ban is a gross misdemeanor punishable by up to 364 days in jail, a fine of up to $5,000, or both.4Washington State Legislature. Washington Code RCW 9.41.370 – Large Capacity Magazines Bringing a banned magazine into Washington from a neighboring state counts as importation and triggers the same penalty. Washington retailers no longer stock Mini-14 magazines over 10 rounds.
Buying a Legal Mini-14: What Washington Requires
Even a compliant Ranch Rifle purchase carries requirements that go beyond a typical rifle sale. Initiative 1639, passed by voters in 2018, put semi-automatic rifles into their own regulatory bucket.
You Must Be 21 and Show Recent Training
The minimum age to buy any semi-automatic rifle in Washington is 21, whether the sale is from a dealer or a private party. Before completing the purchase, you also have to provide a signed certification that you finished a recognized firearms safety training course within the past five years. The course must cover basic safety rules, secure storage, suicide prevention, firearms and children, and state and federal firearms laws.6Washington State Attorney General. Initiative 1639 Recognized providers include law enforcement agencies, colleges, nationally recognized firearms organizations, and certified training schools.
Background Check and Waiting Period
Every firearm transfer in Washington requires a background check, private sales included. If neither party has a federal firearms license, the transfer has to run through a licensed dealer, who handles the check and the paperwork and can charge a fee.7Washington State Legislature. Washington Code RCW 9.41.113 – Firearm Sales or Transfers
Semi-automatic rifles also carry a mandatory waiting period before the dealer can release the rifle to you. The specific conditions are set out in RCW 9.41.092, and the dealer cannot hand over the rifle until they are satisfied.8Washington State Legislature. Washington Code RCW 9.41.090 – Dealer Deliveries Regulated Expect the process to take several business days from the time you finish paperwork.
Taking a Restricted Mini-14 Out of State
Owners of grandfathered, restricted-configuration Mini-14s who want to travel with them run into an unresolved legal question. RCW 9.41.390 prohibits the importation of assault weapons into Washington and does not include an exemption for a resident coming home with a rifle they already lawfully own. The listed exemptions cover military and law enforcement use, dealer transfers to out-of-state buyers, and inheritance upon death.3Washington State Legislature. Washington Code RCW 9.41.390 – Assault Weapons, Manufacturing, Importing, Distributing, Selling Prohibited, Exceptions, Penalty Whether the term “importation” reaches a resident returning with their own property is a question no Washington court has answered. Until it is resolved, taking a banned-configuration Mini-14 across state lines and bringing it back carries legal risk.
None of this applies to a legal Ranch Rifle. If your Mini-14 has no prohibited features, it is not an assault weapon under the statute and this question does not touch it. For any lawful rifle, federal law offers a safe-passage protection when driving through restrictive states: the firearm must be unloaded, legal at both origin and destination, and stored in a locked container outside the passenger compartment, or in a locked container other than the glove box if the vehicle has no trunk.9Office of the Law Revision Counsel. United States Code Title 18 Section 926A – Interstate Transportation of Firearms For air travel, TSA requires the rifle to be unloaded, locked in a hard-sided case, and declared at the ticket counter as checked baggage.10Transportation Security Administration. Transporting Firearms and Ammunition
Court Challenges to the Ban
Washington’s assault weapons ban has been challenged in federal court in Hartford v. Brown. As of mid-2025, the case is still at the district court level, with proceedings stayed while the court waits for guidance from a related case. No court has enjoined enforcement. The ban is fully in effect, and owners should not treat compliance as optional while the litigation is pending.