Arrow Machine Gun

    There are many ways to build traps in Minecraft, but here's a fairly simple way to make a machine gun using red stone mechanics. First, you want to place a dispenser facing your left when you're on its left side. Behind it, place a red stone torch. Go one block away from that and one block down, and place a block. Put a red stone torch on that block the same way the dispenser is facing. Make a four-block red stone wire to the right of the dispenser. On the third block of red stone wiring, place a block on each side of the wiring. On the two blocks you place a red stone torch parallel to the red stone circuitry. On the block you just previously placed (the nearest to the dispenser), place red stone wiring on the opposite side of the red stone torch to a red stone switch. If you want increased results in hitting the unsuspected player or mob, place wiring with a pressure plate near by the dispenser.