While I've used a few of their mounts and throw-levers, I haven't used any of their glass. I've been shopping more for my 308 Howa, planned to move a Weaver kaspa tactical to the 6.5 Grendel I just built, heck, I even ordered the 30mm mount yesterday. Well tonight I came across a good review and a 1/2 off code for their new Spectre 34mm 1-10 LPVO w/mount & flip-covers and "pulled the trigger"! The kaspa is going back from whence it came. I hope the Monstrum is adequate for the 6.5, not really planning to shoot for distance, but should be great for the deer woods out a couple hundred yards.