I've had one for years and love it. How old is the one you're considering. I have an original (No Dash) 6 inch and I love it though I only shoot .38 Special loads out of it. It is my understanding that No Dash and -1, possibly -2 series S&W 586 had an MWO issued on them. As I recall, shooting .357 Magnum loads could lock up the cylinder. I never sent mine back to the factory for service, just switched to .38 Special. You may want to research that before buying. I don't carry the 6", but am actively seeking a 4" model in the event I want to carry a revolver.