command /gun:
   trigger:
      give player iron hoe named "&6ShotGun"
      give player iron pickaxe named "Rifle"


on right click:
     player is holding iron hoe named "&6ShotGun"
     player has ghast tear named "&7Bullets"
     wait 1 seconds
     shoot an arrow at speed 3
     give player an ghast tear named "&7Bullets"