This is just an idea. This plays a big role in weapons. After lots of shooting your gun will probably stop working, And you need to fix it using (well, lets take an) anvil. Then you will have to hold the action button on the (anvil, if eric adds)
This will stop the track of those (spam-bullets-becuz-i-am-the-bezt-in-dis-gaem) players.
Or it could be a trigger.
Set Gun 'A' to shoot 'B' bullets before breaking.