A local gun shop I frequent is having a Machine Gun Shoot in 2 months.
I went last year and it was tons of fun. $20 to rent a machine Gun, and if you have any of your own you can rent a booth.
I just thought I'd give you guys the heads up, a while before hand so you can mark your calenders. It was pretty big last year, with a few booths, and a ton of cool guns (you can see pictures on the website). Definitely a fun way to kill an afternoon.
I rented an MP5K and a mac10 last year (see if you can spot me with the Mac10 on the site). Theres a bunch of stuff to shoot at like old cars, refrigerators, and you can supposedly buy tannerite from them if you want a cool explosion.