Here's a gun I've wanted to make for a long time.  The design is based on that of the Reid Knuckle Duster. It is 1-9/16" OAL.  The frame is cast brass, and the cylinder, hammer and trigger are steel.  It comes in two models, polished unplated brass, and nickle plated brass.  Either model can be hand engraved for an additional $150. The Cylinder, hammer and trigger are plumb browned, but can also be blued, or nickle plated.  Although this looks like a revolver, it is actually a single shot 2mm pinfire.  It is loaded by unscrewing the barrel pin and removing the cylinder.  If you look at the photo below, you can see that there is only one chamber in the cylinder.