Here's what I know, others will chime in with more...
-they are lower-profile than the M1 or Target turrets;
-they only give one revolution (15 MOA if I remember)... this is defeatable with a little careful filing, but you don't get reference marks for which revolution you are on;
-the cap is swappable with a custom one that Leupold will etch for you, based on your load data. So, it's calibrated in yards not MOA.
-they look and feel great.
-my next Leupold scope will have 'em!
