What Are the Assault Weapon Laws in Idaho?
Woody's answers are based on published federal and state law. Not legal advice. Consult a licensed attorney for your specific situation.
Idaho has no state-level assault weapon ban or restrictions beyond federal law. The state follows federal regulations for NFA items but does not add additional restrictions on semi-automatic firearms or magazine capacity.
What This Means for You
Idaho takes a hands-off approach to firearms regulation, making it one of the more permissive states for builders. You won't encounter state-level restrictions on features like pistol grips, adjustable stocks, or flash hiders that plague builders in other states. This regulatory environment means your build decisions are primarily governed by federal ATF regulations rather than a patchwork of state restrictions.
The Detail
Idaho does not define or ban assault weapons at the state level, which means semi-automatic rifles with standard features remain legal to own, build, and transfer. The state has consistently rejected attempts to implement California or New York style assault weapon bans, leaving federal law as the primary regulatory framework you need to navigate.
The absence of state assault weapon laws means you can build AR-15s, AK-pattern rifles, and other semi-automatic platforms with threaded barrels, adjustable stocks, pistol grips, and standard capacity magazines without worrying about state compliance issues. Idaho also has no magazine capacity restrictions, so standard 30-round magazines and even larger capacity magazines remain legal.
Federal regulations still apply fully in Idaho, so you still need to follow ATF rules regarding short-barreled rifles, suppressors, and other NFA items. The state has passed legislation supporting Second Amendment rights and generally opposes federal overreach, but federal law still supersedes state law when conflicts arise.
Idaho's preemption laws prevent local municipalities from enacting their own assault weapon bans or magazine restrictions, creating consistent regulations across the state. This means a rifle legal in Boise remains legal in Coeur d'Alene or any other Idaho jurisdiction.
Always verify current federal regulations and consult Idaho's official government resources for the most up-to-date information, as firearms laws can change and local interpretations may vary.
Build Impact
You can build feature-rich rifles in Idaho without the compliance headaches common in restrictive states. Focus your attention on federal ATF regulations rather than worrying about state-specific feature bans or magazine restrictions when planning your build.