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FPS to Joule

FPS to Joule

請問一支大約420FPS氣槍會唔會過2Joule?合唔合法?

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but if you use heavier bbs the Joule will increase.

BB: .45g
fps: 420

Joule: 3.67

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so my question is, under HK law, is there a limit on FPS?

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so if I have a 420-450 FPS airsoft gun overseas, would it be legal to import?

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