need a little help

[deerslayer15]

A budy of mine was going through his dads old house and found a double action .22 revolver that didn't work properly. He brought it to me to fix. I'm not shure what the make of the gun is, it has a capitol R and 610 on the handle...The problem is the hammer will not stay back. You can pull the hammer back and it doesn't opperate the cylander like it should. Also the trigger will not opperate right...if you pull the trigger it does opperate the cylander but not the hammer, also the trigger will not return by itself. I took the gun apart and it looks like someone took it apart and didn't put it back right or left out a few parts...if anyone know anything about this gun...Please help.

[Questor]

Ask any mechanic: This is the most dreaded scenario. Somebody brings in a basket case and wants it fixed. You've got your hands full on this one. It could be something as simple as having the sear installed backward, but it sounds like there's more to it than that if the cylinder won't rotate.  I wonder if all the parts are there.

[flintlock]

Remember when Clint said.."A man's got to know his limitations"?

I agree with Questor...I do a bit of gunsmithing and building...and I like to help my buddies...I believe this is one you might want to return to him and tell him it looks as is somebody else has been into and left out some parts.
It would be different if you could find a parts schematic and figure out what is going on in there...but it could also be a liability it it isn't fixed properly.

When I was 14 or so a guy brought in a transmission for me to fix out of a John Deere 110 riding mower...this was back in the '70s...He had taken it apart, and it was in a 5 gallen bucket...I had the parts books and service manuels and was able to fix it....It took me 2-3 times as long as it should have, and cost him 2-3 times more than it would have if he had bought me the whole mower....Good Luck