Didn't get to sight these in today, but I'll try to do it Tuesday.
The XS Lever Rail sight system is a VERY nice sight setup! The rear is elevation and windage adjustable, and comes with two different sized aperatures - 0.230" and 0.191" openings. It ships with the larger one already installed, but I immediately swapped to the smaller one. Install is damn near self explanatory - easy to see what you need to do, and no need to read the directions at all.
On the rear, you'll need to set it up for whatever range you want to zero, and it's not something that you'll be able to change on the fly. Once it's set, it's set. For windage adjustment, you have a set screw on each side that you tighten down. For elevation adjustment, the aperature threads up/down in 1/2 turn increments. There are flats on the sides that the windage screws mate up against. So, set it up for your range, and it's good.
The front sight isn't adjustable - just screws right to the barrel. It's got a white-painted center section, and should be easy to pick up when sighting.
Can't wait to shoot it and sight it now, with a 100-yard zero. <thumbsup>