I've seen this optic for sale online rarely, but it seems like it's a heck of an optic. Anyone have any info other than pics of it?
www.aa-ok.com/1P29.htm

What about the BDC? I take it as it's an interchangable (for calibers) turret which adjusts the reticule (similar to the way the Unertl optic does it).

Seriously considering this optic, so any info would be much appreciated. How's the FOV, for such a short tube? Parallax?

Got my hands on one last month by lucking into one at the range. Fixes virtually all sins of the original Trilux; still has the pointer that is better at hitting things than paper punching. Cam dial actually selects variable distances vs the short/long lever. No idea if swappable for many other calibers but sure you can learn it as you go. Sighting controls appear much more precise in controlling the optic on the mount.  Nice alloy design weighs maybe a pound, not the 2lbs of the otherwise superb PO3.5x21. Very clear view, range est bracket is tucked to the far right in the thumbnail zone seprated from the rest of the fov, fov is est 40' subjectively a bit more than PSO4x24 but not the 60' of the PO3.5x21.

Gotta compare to the 4x24 for about half price, good but not great clarity, drag reticle for paper punching and bullet drop compensation. PO 3.5x21 has finer reticle, bigger fov, but weighs the full 2lbs.

I only had my original Trilux for comparison at the time (now sold). IMHO none of the above are a bad choice.