Two new photos have been received by email from Cap'n Monty...(full size versions are available in the Member Gallery Album.
The left side view with the grips removed:
...and a photo of the boltface that cleary shows that the standard 9mm boltface was opened up to allow the use of .45 ACP.
I should have the CD photos in a couple of days, and will post them next week, or earlier if I get the chance.