Good mount - Trijicon TA51 ACOG Flat Top Picatinny Mount Rail Adapter

thumb nuts can loosen under vibration. I found that applying ONE drop of blue thread locker and letting it dry overnight on the bare threads before tightening the thumb screws gave just enough 'stick' to keep them from moving, but still allows easy removal.
Pros: solid
Cons: can loosen

This review was written in the old system and had content requirements that are different than reviews written today.