So, I am looking to put some optics on my AR. I want magnification, so EOTechs and Aimpoints are out. I'm seriously considering a 4 x 32 ACOG. Has anyone shot them past 100 yards? I'm curious as to how they do long range being only a 4 power. I know the list is extremely long for optics to put on any rifle, but what do you guys have on your AR's that you like?