Well I decided to pass on it. It's a 4-5/8" gun. The front sight has an aftermarket ramp with a 3/8" dovetail which will take rifle front sights, kinda' cool I guess. The rear sight blade has been carved into a shallow V notch, kind of a poor mans express sight. The 9mm cylinder has a partial serial number on it that doesn't match the gun's number, so apparently it was never fitted to the gun, but seems fine.I would be interested in purchasing that 9mm Blackhawk if it is a 4 5/8" or upto 6" barreled unit.