large magazines, stockless rifles, shotguns, generally equals = a lot of would be gang bangers shooting up the place with little knowledge or regard for safety or range equipment!
everybody is not created equal, nor with the same common sense or gun ability.
The range is located in a clearing in the woods of a rural area, so I doubt they'd get many gang-bangers there. Heck, only once have I ever even seen another shooter there, it's usually pretty deserted. In fact, that's one of the reasons why I like it, it's in a peaceful place that I have practically all to myself. Heck, only once did I ever have anyone check in on me while I was shooting, so it would be easy enough for a dishonest person who doesn't follow the rules to break them if they wanted, especially gang-bangers who aren't exactly known for being law-abiding citizens.