Ok well try putting in the remove ammo from all vehicles as well, so at least it won't have ammo.
You'll find it a few posts down into this, we run this on our server and have almost all the vehicles that aren't a DZE variant added to the DZE_StripAmmo variable in our init.sqf.
http://epochmod.com/forum/index.php?/topic/2639-custom-vehicles-removing-ammo-same-as-new-patch/
That way at least they won't have any ammo and you can't get it.
You'll find it a few posts down into this, we run this on our server and have almost all the vehicles that aren't a DZE variant added to the DZE_StripAmmo variable in our init.sqf.
http://epochmod.com/forum/index.php?/topic/2639-custom-vehicles-removing-ammo-same-as-new-patch/
That way at least they won't have any ammo and you can't get it.