Want to keep the cylinder and barrel assembly together from the original revlover so will buy a cam and spring. Based on the comments it sounds like parts from a double action will work. The barrel is blue, 10" long, and has "Model of 91" stamped on it.

The gun was listed on the online auction site. I already sent Mr Dye an email as Ralph suggested to see if he has any sights. If he doesn't reply I will send you, Chris, a PM to see if you still has a front sight available.

Sounds like a .200 tall front sight is the right height. Mine has the bottom of the barrel machined flat too so it fits all model frames. It will be fun to take it to the range and see how it shoots once its all assmembled.