Minor product review:
CoyoteM1A check rests.
https://www.coyotem1a.com/
Might be able to use them on any similar stock I would imagine. Small merchant, made in Canada, quality I think is better then most name brand products (smith enterprise cheek rest for example) for far less money.
Some pics:
Hey look, It's "the shoulder thing that goes up"
(Sorry, couldn't resist)
The underside of this cheek rest (not pictured), is a rubberized mat of some kind. It seems to prevent the rest from moving around on the stock. Combine that with the straps on the cheek rest, and it doesn't move around on you at all. I'm quite happy with my purchase in that regard.
My only gripe:
The nylon fabric is not kind to stubble. If your like me and sporting a 5 0'clock shadow most of the time, your whiskers will get snagged on the rest and pull a little. Downright annoying. So, I'm sad to say, shave before shooting, or get a different cheek rest.