I bought a classic Blackhawk in .357 mag, at a a gun show recently. It is the classic "3 screw" model, made in 1967, BUT the original owner had the factory conversion done with the hammer, transfer bar, etc. added.
If I could find the original OM kit at a reasonable price, I'd like to convert it back.
If I could find the original OM kit at a reasonable price, I'd like to convert it back.