Here you go
http://www.sportsmansguide.com/product/index/volquartsen-volthane-right-hand-target-grip-for-ruger-mkii?a=70737
or if you need wood custom grips
https://www.volquartsen.com/tags/10-mkii-mkiii-pistols,20-volquartsen-mkiii-custom-pistols
Hope this helps
Chris