[Arkshine]

The buying is effective when you are at least 2, meaning when the game restart. You could add sv_restart 1 in plugin_init(), but since you need at least 2 players to play I think it doesn't matter.

Using the offset, since you want to block only primary, you would need to set in Ham_Item_Deploy and in Ham_Item_SecondaryAttack since both offset are changed there. But your way is more appropriate.