Ghost Ring Sights for 3/8" Dovetail

[SmallBoreSnipers]

Does anyone know if they make sights like these that will fit a 3/8" dovetail?

http://www.xssights.com/store/rifle.html

I can only find them for weaver. Is there any adaptor to go from 3/8" dovetail to weaver?

 

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Re: Ghost Ring Sights for 3/8" Dovetail

N.E.G.C. makes a nice one it is available from brownells