Great buy, quality product.
Fits nicely on my Bushmaster M4A3.
Once I sighted my reflex scope on my Bushmaster it can be removed and re-installed with out additional adjustments.
You can still use the iron sights with the mount installed.
I regret not ordering two on the original order, the additional one for my Nikon scope.
Pros: Soiid constructions, best buy for your money.
Cons: Regret not ordreing two.
This review was written in the old system and had content requirements that are different than reviews written today.