I don’t really engage in the Glock/1911 banter. My gun was a gift and I thought this was a source for real information. Next...
Shank,
Had the same thing happen to me. I used a fine steel wool pad (0000) and a light machine oil and buffed the rust out with no damage to the firearm. Actually, it looks pretty good for an old timer. The bluing has faded quite a bit over the years but my 1911 Browning is just as reliable as ever. It just needs a little more TLC in its old age.