All of the Stith K4 mounts I have came across look like your front tube. I have other diameter front tubes but they don't match up with any of my later K4s. Tubes for the later scopes may exist but I haven't found any in nearly 25-years of looking. Now having said that someone here will have one. Sometimes you have to work Murphy's Law in your favor.
Last edited by S99VG; 10/24/16.
