WTS: Williams Fire sights Universal Slugger with Ghost ring (SOLD)

[Woodsman4God]

WTS Williams fire sights with optional Ghost ring apperture, the standard sights new are $39.95 and the Ghost ring is $9.95. I am selling them used for $35.00 TYD. Here is what they look like mounted on my mossy 500. I also have an additional raised rear sight included if you needed to ba able to adjust them more for sighting in

[Kcurtisjr]

How do these attach?