Don't know if they're LEO only, though I imagine it would be difficutl for a citizen to get ahold of one. Basically they are a glock with a blue frame, and a sub caliber barrel installed for using sims. You stick a standard glock slide on the frame and shot it all day long no problem. Theoretically you can stick a stock barrel in and shoot it, but I don't know if the slide is manufactured for it, though I imagine it is.
Price is going to run around $300-500 per weapon.
-Jenrick