I watched when ACOG was the only thing worth having if you wanted durable magnification on a fighting gun.
Then it became NXS and SB 1-4's on QD mounts with irons backing them up.
Now it is 1-8's hardmounted, with offset T2s and RMRs.
Which brings me back to the ACOG...if 4x is enough for your AO, is the acog+offset t2 a better path than a LPVO? Most of the competition shooters I've watched simply roll the gun for those stages rather than throw the lever on the lpvo, effectively turning it into a fixed mag sight.
The acog is tough, and weights in at a whopping <14oz WITH mount. A t2 in an offset is about 5oz. Mounted up, on the gun, this is a 19oz combo. That is shaving over half a pound off of a Razor-E in a 6oz mount...