This Ruger manufactured no bump adjustable rear sight sub-assembly marked "Micro" is for the old model 3 screw Super Blackhawk single action revolver and is in very good condition with light wear. This sub-assembly consists of the body without bump, blade, windage spring and windage screw. (file photo)
Note: Firearms with the following serial numbers have been observed with this part: 7078 & 9425.
