I've shown this modified Model 1917 before. I purchased it from the now 80 year old son of a Detroit Police Department, homicide leuitenant, that was on the force from 1928 - 1953. Supposedly the modifications were done by a friend of his on the department by the name of Lew Sanderson. The grip frame was modified to accept the semi round but service stocks or the Sanderson's. The barrel shortened to 3 1/2" and a elevation adjustable front sight and windage rear sight. The holster pictured is a modified 1917 gov't issue that was carried by the leuitenant. The gentleman that I purchased this revolver had no children and wanted to sell it to someone that would appreciate it's history. Greg