AIS is the one I got to play on. Didn't catch the name of it when we were there but I can recognize it from your description and the web page. I have looked on the web trying to find civilian availability for sims and it doesn't appear to be common. Might try to call the manufacturers and see if they know about some installs.
Haven't had the chance to try simunitions yet, but have heard ALOT about it. Sounds like the biggest problem is that since the training is with one's own weapon GREAT care must be taken to ensure ALL live ammo is out of the area.