PGT
Member
It looks like your front site block is a barrel band, silver solder and then dovetail for the Lyman. I wonder if there's a simpler solution...looks like Altius sells a rear Izhmash sight for the BB for $225 and the Pyramyd air gun stuff has an adjustable front. As long as the front sight height is correct, there should be enough adjustment in the rear to zero things in.