The 1st semi auto service gun I had. Did indeed have a magazine disconnect. I removed it before I ever fired the gun, a S&W 59. Dumb idea they were. So, others can follow. A magazine disconnect makes the gun unable to fire if magazine was removed.I think I know what your opinion will be, but how do you feel about magazine disconnects/safeties ? They were popular for a few years, but I think most manufacturers have discontinued them. I've removed them from a couple of my guns as soon as I got them home.
Hell yah, if I have a round in the gun and need to use it while changing the magazine or the mag got released. I want to stay in the firefight at least 1 more round.
Many years ago, I read a police shooting report were the officer had a S&W 9mm with a mag disconnect. He was shot during a gun fight. Figured he was going to pass out or be over taken by the attacker. He released the mag so the attacker could not shoot him with his own gun. But all the attacker needed was to reseat the mag and continue using it. I think they are a flawed idea of gun safety.