Remove the rear sight to find the release. It's not a big deal, When you get it clean and inspect the firing pin clean the channel and spring with a good solvent and never let grease or oil get to it. If the firing pin is peened it will be obvious and easy to replace. Whenever I clean my 41 one of the last things I do is squirt carburetor cleaner into the firing pin hole and blow out with my compressor. Since 1972 I have had to strip it 3 or 4 times and replace the pin once. That was pre compressor days and when I was doing a lot of dry firing without a snap cap.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.