Things I liked:Very solid mount. It clamps onto the dovetail very securely. Also, since it's a one piece unit, the rings are well aligned. Things I would have changed:The only negative on this is that the clearance between the bottom of the rings and the support bar is only 1/8 of an inch. The bottom of the turret housing on some scopes is more than this and the scope will not sit in the rings correctly without shimming. What others should know:Excellent quality. Just be aware of the scope bottom clearance.