Is it legal to carry brass knuckles in Japan?
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Quick answer
Legal position
Current starter summary
In Japan carrying brass knuckles without a legitimate reason risks treatment as carrying a concealed dangerous instrument under the Minor Offenses Act.
Conditions
What would need to be true
Carrying a concealed dangerous instrument without a legitimate reason is punishable and Japan Customs classifies knuckle dusters as weapons.
Exceptions
Known carve-outs or edge cases
A legitimate reason may affect the outcome.
Penalties
Penalty snapshot
Minor Offenses Act violations are punishable by detention or a petty fine.
Enforcement
How this may be enforced
Police enforce crackdowns on carrying dangerous instruments under the Minor Offenses Act.
More rules in Japan
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buy a brass knuckles
The official Japanese sources reviewed here clearly address import control for knuckle duster type items but do not clearly state the rule for an ordinary domestic purchase in Japan.
buy a pepper spray
The official Japanese sources reviewed here clearly address import control for tear gas style defensive spray but do not clearly state the rule for an ordinary domestic purchase in Japan.
buy a stun gun
The official Japanese sources reviewed here clearly address import control treatment for stun guns but do not clearly state the rule for an ordinary domestic purchase in Japan.
buy a taser
Official Japanese sources reviewed do not use the brand term Taser in a way that cleanly answers civilian purchase, carrying or possession; the closest official material found is the Minor Offenses Act on concealed dangerous instruments and Japan Customs material classifying stun guns as weapons.
Compare this activity in other countries
This makes the rule page useful for comparison without creating a second data source.
Australia
Australia does not have one uniform civilian brass-knuckles rule. Victoria Police classifies a knuckle-duster as a prohibited weapon, and Victoria Police approval material says prohibited weapons generally require Chief Commissioner approval or an applicable exemption for purchase, possession, carriage or transport. Australian Border Force treats knuckle-dusters as weapons subject to border controls.
Austria
Austria classifies brass knuckles as prohibited weapons in category A. The official weapons overview says acquisition, possession and carrying of category A weapons are fundamentally prohibited.
Belgium
Belgian Justice lists American brass knuckles as prohibited weapons. Prohibited weapons cannot lawfully be possessed, bought, transported or carried by civilians.
Canada
Carrying brass knuckles is not lawful in Canada for the public because they are prohibited weapons.
About this row
Canonical dataset status
Official sources
Source URLs attached
Reset rule
Why the page is intentionally light
The new site should show a stable layout, a stable route, and clear source slots before the dataset is scaled up again. That keeps management simple and makes later official-source population safer.