There is only one streamlined ramp that will fit a Knight correctly. Because of the 1.625" hole spacing, only the 3/16" ramp will fit that hole spacing. Williams #1690
UNLESS you choose to use a 'sweat on' ramp
Thanks for that info, Mike.
I took the WGRS sight off one of my bighorns, because I had to run it so low, it was almost off the elevation slide