Is High-Capacity Magazine Legal in Montana? (2026)

Yes. In Montana, high-capacity magazine is legal. Montana has no state laws restricting the capacity of firearm magazines. Residents are free to own, purchase, and sell high-capacity magazines without any state-imposed limitations or permits, consistent with Montana's robust protection of firearm rights under Montana Code Annotated Title 45, Chapter 8..

Key facts

Status
Legal
Permit required
No
Jurisdiction
Montana
Last reviewed
2026-02-27

High-Capacity Magazine laws in Montana

Montana law does not regulate the capacity of firearm magazines. There are no statutes within the Montana Code Annotated, including Title 45, Chapter 8 (Offenses Against Public Order), that define 'high-capacity magazines' or impose any restrictions on their ownership, sale, or transfer. This means that individuals in Montana can legally possess magazines capable of holding more than 10 rounds without facing any state-level penalties or requiring special permits. The state's approach to firearms is generally permissive, emphasizing the right to bear arms. Montana also has strong preemption laws that prevent local governments from enacting ordinances that would restrict firearm ownership more stringently than state law. As a result, high-capacity magazines are treated no differently than any other firearm accessory under Montana law, reflecting a commitment to broad Second Amendment rights.

Frequently asked questions

Is high-capacity magazine legal in Montana for travelers?

For travelers visiting Montana, high-capacity magazine is currently legal. Montana law does not regulate the capacity of firearm magazines. There are no statutes within the Montana Code Annotated, including Title 45, Chapter 8 (Offenses Against Public Order), that define 'high-capacity magazines' or impose any restrictions on their ownership, sale, or transfer. This means that individuals in Montana can legally possess magazines capable of holding more than 10 rounds without facing any state-level penalties or requiring special permits. The state's approach to firearms is generally permissive, emphasizing the right to bear arms. Montana also has strong preemption laws that prevent local governments from enacting ordinances that would restrict firearm ownership more stringently than state law. As a result, high-capacity magazines are treated no differently than any other firearm accessory under Montana law, reflecting a commitment to broad Second Amendment rights.

Do I need a permit for high-capacity magazine in Montana?

Montana does not specifically require a permit for high-capacity magazine, though general regulations apply.

Can I transport high-capacity magazine through Montana?

Transport laws for high-capacity magazine in Montana depend on the specific item and your route. Generally, transport is allowed if you comply with state regulations. Always check states you pass through.

What are the penalties for high-capacity magazine violations in Montana?

Penalties for high-capacity magazine violations in Montana vary based on the specific offense. Always verify current laws before traveling.

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