I had no luck with the MI mount, wouldn't hold a zero for anything. Groups at 25 yards looked like a shotgun, the irons shot fine.
Same sub2k, put a vortex... whatever the larger dot is. Can't remember the model. Anyway, it wouldn't fold with it on there but it worked OK until it fell off in the middle of a stage. Finished the stage with the irons after the optic hit the ground, and finished the match with the irons. The plastic rail was just too flimsy to hold it under high heat/vibration and through all the match stages.
Maybe my sub2k is just cursed.