Dispenser Trap

Just a little building. Its a dead ended hallway with multiple dispensers, of which, 8 have arrows contained within.

Might create more for this building later, but for now, have fun with this.
The lever at the back is how you turn on the rapid-fire ability.

Short and small building, if you have trouble finding the program to use this, just PM me and I can probably link you to the forum that I got mine from :3

Also, as a side note, be ABSOLUTELY SURE that you copy air and water, so nothing gets ruined.
Redstone is extremely touchy when it comes to being placed between two touching blocks.