I don't have an AR or an M77 or a 770 or a 700. My new toy is smaller and possibly more common. I'm looking online at stuff for it. I have already taken it apart and put it back together without replacing anything. I need a #12-24 X 1" cap screw but Home Depot failed. It's not been fired. Let's say I'm considering replacing the valve springs in a 4.8 despite the stock cam.![]()