[Alternative112]

I would like to know the cause of this, too. You shouldn't ban anybody for weapon hax immediately unless you are absolutely sure your detection is 100% accurate (very very hard to do). If you detect someone has a bad weapon, just send a warning to admins, or at worst kick them.

Keep this in mind:

Quote:

Originally Posted by SAMP Wiki Note: When the player state is passenger, the function returns the weapon used by the player before they entered the vehicle. If a cheat is used to spawn a weapon inside a vehicle, this function will not report it.

EDIT: forgot to mention, that's a note from the GetPlayerWeapon page, which I am presuming you use at some point during the weapon check.