Actually from your film I built you one. The player in the film modified a MkII by shrinking the main ring to 50Mil and opening the wingspan bar to it's maximum setting. In your download, if you change the number at the top of the mil file from 160 to 256. You will have a MkII with a 100Mil main ring and the wingspan bar set for a 40ft wingspan at 400ft(133yd). That is loosely what the AH default gunsight is based on.
Because I build my gunsights with a size control file, you only change a number in a file instead of hand building many gunsights of the same kind to different ring diameters.
Here if anyone wants what I built him.
http://www54.zippyshare.com/v/82304967/file.html