Very good mount rock solid held zero well on my acog. shipped fast too
Easy to adjust the tension. Be careful not to crank it down too tight or you will just defeat the purpose of having a quick release mount—you could end up needing a tool to pry open. I have mine set to where I can unclamp it by hand but it still holds securely—rock solid. It's a little more compact than Trijicon's standard TA51 mount. I have the tension lever on the ejection port side to keep the protrusions all on that side of the rifle. It works well and doesn't interfere with ejecting cartridges. Overall, I like the mount and would recommend it.