I know that at the range I worked at no one was allowed to open carry. We weren't officially allowed to concealed carry, but the majority of the RA's did. We had our share of crazies, drunks, and stupid people. If you're responsible for a range, the safety on the range, and the range's guns, why wouldn't you carry? I had guns pointed at me both unintentionally and intentionally more times than I can count. I would never work at a range that insisted that I be unarmed.