I use blue locktite on all of the screws to ensure that nothing moves. I also tighten the large bolt by hand, but I also use the rough side of a leather belt for friction. Even after firing more than 200 rounds, the mount stayed tight, as did the AimPoint Micro T-1 sight I was using. Also, the mount returned to zero after detaching and re-attaching it. Overall, a strong, quality mount.
Pros: Allows co-witnessing of iron sights
Cons: none
This review was written in the old system and had content requirements that are different than reviews written today.