Double action only Webley Mk IV?

Look at the area surrounding the axis screw hole and you'll find that it's raised slightly. This is one of the outer edge frictioning surfaces. I can tell you from hard learned experience that revolvers just don't respond to a simple parts change mechanic. In fact, there's no such thing in the world of revolvers. Certainly not the revolver world that I have experienced. Every part is selectively fitted to start with and then fine hand fitted afterwards. I mention the trials and tribulations of revolvers, albeit our old Enfields (but same meat, different gravy in essence) in our workshops. To actually go through fitting a hammer or a trigger or a pawl or a cylinder stop would take hours and hours. Then you've got to poker the cylinders and....... and..... It took 3 months as apprentices to master these, Brownings and two simple signal pistols. Definately NOT for the feint hearted.

I mention these trials and tribulations in a book by Mark Stamps........ Revolvers...... Good when they're going good, but when they're going bad, I didn't want them on my work bench!