My son brought me a "surprise" Ruger Mark II pistol the other night.
I call it "surprise" because it was completely disassembled and in a bag, and I was surprised I got it back together in working order.

I have never had a Ruger Mark III apart on any level before, so when he called and asked if I would attempt to 'fix' it for one of our neighbors from down the road, I was reluctant at first (because of the nightmares others have told about the difficulty of Rugers)........ but my desire to help, as well as the curiosity, got the better of me and I said I'd try.
Well, I can honestly say, it wasn't the almighty trial I had heard it would be. With a little patience, and a couple of great youtube videos, I had it together in a jiffy.
I was happy.
My son was happy.
Our neighbor was very happy...... and for good reason...... After I got it working, and my son took it back, he returned and told me it had been our neighbor's dad's gun. His dad had taken it apart eight years ago and couldn't get it back together..... so he left it alone with all the parts in a bag for years. His dad fell into poor health and passed away last year, so our neighbor wanted to get it back into firing order in memory of his dad.
Now I was more happy.