Spoke with them on the phone to verify my order and had a great conversation with perfect service. They honestly care about their customers and strive to be as helpful as possible. As for this mount, it is better and more precise than your expectation. To illustrate what I mean, I purchased this mount to hang on to a Gen 3 Razor and let me swap it back and forth without tools between my DDM4 and my Sage EBR build without having to go to the range to re-zero. The precision of this mount lets me do that, I set my turrets to my M4's zero and when I swap it to the EBR I just dial the difference between the zeros. Doing this requires precision in every aspect, from the optics tracking to the mounts repeatability. Contact Vortex and Scalarworks about their amazing engineering tolerances and contact Bauer for the best services. Those Click-Drive wheels are far more secure than you can imagine, you really have to get your hands on one to appreciate it, you will not be disappointed.