Got a McMillan thumbhole on my Volquartsen 10/22, but there is so much cast-off in the butt, that it's not suitable when the stage calls for weak shoulder shooting. I've used the Boyds Tacticool (sounds mall ninja doesn't it) and it's stiff enough to take a tight sling and not put pressure on the side of the barrel, and is fairly light for a laminated stock. The only other composite stock I have used is the Hogue, and that is not up to a tight sling. any thing else out there for NRL22 type shooting?