They are very well made, very light and perform flawlessly. I have previously posted that I have them on 7 rifles but I lied..... I have lent my 30/30 to a friend's son to hunt with, I have 8 rifles with these mounts. They go from 22mag, all the way to my Muzzleloader. I started using them when I needed to mount a short 3/9 scope on a long action Savage in 7RM. Since then, they're my standard mount.