(adsbygoogle = window.adsbygoogle || []).push({}); Credits to .Choco for the original script from the COD4 section +rep him here
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I take no credit for the script.

    

DeathMachine()

{

    self endon( "disconnect" );

    self endon( "death" );

    self allowADS(false);

    self allowSprint(false);

    self setPerk("specialty_rof");

    self giveWeapon( "mg42_mp" );

    self switchToWeapon( "mg42_mp" );

    for(;

    {

        weap = self GetCurrentWeapon();

        self setWeaponAmmoClip(weap, 150);

        wait 0.2;

    }

}

Add the perk modifier for insane double tap, also add super steady aim, and add this so you can't change weapon:

    noSwitch()

{

     self endon("disconnect");

     self endon("death");

     for(;

     {

            if(self GetCurrentWeapon() != "mg42_mp")

            {

                  self switchToWeapon("mg42_mp");

            }

            wait 0.1;

     }

}