States can raise these minimum ages but cannot lower them below the federal standard. As of 2026, several states have stricter rules:
: Some states, such as Minnesota, require a permit to purchase handguns or "military-style assault weapons," which are typically only issued to those 21 or older. Ownership vs. Purchase
It is important to distinguish between buying and possessing. Federal law generally prohibits anyone under from possessing a handgun (with exceptions for ranching, hunting, or military service), but it does not set a minimum age for the possession of long guns. International Snapshot Outside the U.S., legal ages vary significantly: Minimum Age - Giffords.org
: Washington and Massachusetts require buyers to be 21 for semiautomatic rifles, while allowing 18-year-olds to purchase other long guns.
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