My 3 screw Blackhawk was straight forward and I slow rust blued it. Its was not a problem make a few notes and look at it closely before you start removing parts snap some pics I think a single action is less of a challenge than doubles.
1911's are a piece of cake but there are a few "make sures" and always test ALL the functions for proper function before loading and chambering and firing.
There are some very good how to's on line if you look for them.
Ar-15's aren't rocket science but make sure of the make sures.
I had an acquaintance who did not put his 1911 back together correctly and he shot a hole thru the drywall in his kitchen when he chambered a round. I'll say no more.