I haven’t been able to find anything that says that “licensed security guards” must carry revolvers. I looked for that before. In fact, I’m aware of MANY “licensed security officers” carrying semiautomatics. Granted the majority of them that I know personally are guarding Federal facilities, and most of the time such rules aren’t enforced against Federally hired guards (who by the way are CONTRACTORS, not “Federal officers”, so don’t get those two things confused).
There may be some local rules or something, but I’m not aware of any of those. In fact, my own BANK doesn’t even have armed guards.
then again, knowing some of them when I asked about “Why don’t they carry weapons?” to one of their bosses.... his response was “You know them, would YOU want THEM carrying guns?”
I have to say that in that context the answer was no, but that company has a habit of hiring anyone who can still walk, puts them in a security uniform and then tells them to “guard” something. They don’t even provide the people in uniform with a cell phone to call 911. Needless to say, those folks are no longer contractors where I work.
I posted a link to the CO Spgs rules above. There's NOTHING in 'em about revolvers-only.