Installing sling mounts on a rifle

So I have a Rossi M92 Trapper that I'd like to install a sling on. I have the sling, but have not ordered any mounts. Just wondering if anyone has done this and what products and procedures to use.

Flushcups, a large still bit, and your choice of thread locker

Same boat. Need to add one on my manners in the front.

I have been looking at the one was integrated pic rails from atlas. Let me know how it turns out