1: Heavy AA guns ($300 each) These have a 1% chance of destroying blocks that are not AA-able when it hits them, and have a 50% chance of destroying AA-able blocks, but have a max fire rate of 5 AA gun bullets per second. 2: Flak cannons ($500 each) Flak cannons are similar to cannons, but can only damage AA-able blocks, do damage in a much wider area,(You can miss and still damage an aircraft) and do massive amounts of damage to players. 3: Autocannons ($150 each) These have a 100% chance of destroying AA-able blocks, but can only fire forward and are operated using a sign that fires all autocannons on vehicle every time you right click it. 4: Machine guns ($75 each) These have a 2.5% chance of destroying AA-able blocks, but will do significant damage to players (though not instakilling them) and can fire in all directions, and can be fired forward using a sign that fires every machine gun on a vehicle every time you right click it. Anyways, those are my ideas, any ideas how to improve them?