I'm not sure. We have a set of M19: 3 barrel lengths, blue and nickel; set of M586 / 686: 4 barrel lengths, blue and stainless; set of M629: 5 barrel lengths, full lug, unfluted cylinder. There is also an orphan set of M29 that were acquired at low prices in moments of weakness.
Adjustable rear sight is a requirement, not a model option, because the gun isn't finished with just a notch.
Adjustable rear sight is a requirement, not a model option, because the gun isn't finished with just a notch.
