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  • Jg Hk416

    Got a HK416 here, wanting to get it to GZ standard.. (328 max I think)

    Which spring should I drop in it?

  • #2
    Re: Jg Hk416

    328fps is one joule

    so use a one joule spring

    u can get a systema one joule spring for pretty cheap

    just type it into google

    hope this helps and good luck
    ............
    Chris

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