Don't know if anyone has noticed this or not, but it's not possible to use the Trijicon TA26SR-10 ACOG. When selected it just stays frozen in place. I suspect it's because the info on it states that it mounts to ACOGRing but ACOGRing isn't an available mount.

You're welcome. Just a side note also for an additional separate observation.

This one is a visual only. When you expand the lower receiver to select the lower parts, one of the pins for the take down pin set shows up over to the right rather than with the other pin in the circle. It has no effect on functionality but I simply noticed it. I haven't checked if this is so using Internet Explorer or Chrome but it is so using Firefox.

I use Chrome for most all internet web access but have found that the Unity player works better in Firefox than anything else - at least on my laptop.