I have the 2x (more like 1.5x) Tru Glo on my MAK-90. It seems to be holding up well. I use it for field use as a tracker. It has maintained zero (100 yd.) with over 200 hundred rounds. I have removed it and remounted it twice and it still is on target
. I don't expect it will hold up to some real serious abuse, but who knows. So far so good. It will do until I can mount and EOTech
. Then I may shift it to my AR-15. Time will tell. Either way, for the money I can't complain.