The boys and I had three important things on the list for our excursion to Sin City... GAMBLING, STRIP CLUBS, and MACHINE GUNS. In exactly that order, we found ourselves at Discount Firearms to rent us some fully-automatic range time.
The showroom is large and neatly organized with a good selection of new and used firearms for sale. The staff seemed knowledgeable and friendly - and fully armed just in case. The rental options are varied, but not overwhelming and their pricing system is by magazine - which makes it easy to figure out how much lead you want to send downrange. The lanes themselves are well-lit and ventilated (climate controlled) and the automated target racks are a nice, high-tech touch (I'm used to the low tech lanes here in California).
Firing a full-auto firearm is definitely fun, and makes you respect the destructive force of these puppies. Unfortunately, this is also one of those things that stays in Vegas, as most of the country have strict laws regarding these class 3 weapons.
Good fun all round - check it out if you have time while in Sin City.