This is an excellent riser, but it's pro is also a con. To get the riser on and off your picatinny rail you'll have to use a rubber mallet because the fit is so tight. The plus is that it won't move once on causing you to lose zero.
Pros: Tight fit, solid construction, reasonable price
Cons: Tight fit
This review was written in the old system and had content requirements that are different than reviews written today.