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Montana Magazine Capacity Laws (2026)
Permitted: No state law limits magazine capacity in Montana — standard-capacity and high-capacity magazines are legal to buy and possess under state law.
No state law limits magazine capacity in Montana — standard-capacity and high-capacity magazines are legal to buy and possess under state law. Federal law sets no general capacity cap. A handful of cities around the country do have their own rules, so check locally if you're unsure.
General legal information, not legal advice — verify important decisions with a licensed attorney.
Magazine Capacity in states bordering Montana
The same rule in each neighboring state LawLert has verified, from that state’s own official source.
- IdahoPermitted
Idaho sets no state limit on magazine capacity — there is no cap on how many rounds a magazine can hold.
Verified May 31, 2026 · Source: legislature.idaho.gov · Full Idaho rule →
- North DakotaPermitted
No state law limits magazine capacity in North Dakota — standard-capacity and high-capacity magazines are legal to buy and possess under state law. Federal law sets no general capacity cap. A handful of cities around the country do have their own rules, so check locally if you're unsure.
Verified Jun 7, 2026 · Source: ndlegis.gov · Full North Dakota rule →
- South DakotaPermitted
No state law limits magazine capacity in South Dakota — standard-capacity and high-capacity magazines are legal to buy and possess under state law. Federal law sets no general capacity cap. A handful of cities around the country do have their own rules, so check locally if you're unsure.
Verified Jun 7, 2026 · Source: sdlegislature.gov · Full South Dakota rule →
- WyomingPermitted
Wyoming has no state limit on magazine capacity. State law bars cities, counties and other local governments from regulating firearms, accessories or ammunition beyond what state law provides.
Verified Oct 12, 2026 · Source: wyomingdci.wyo.gov · Full Wyoming rule →
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