
And see if that helps.
Cannonshop's instincts are pretty good. Amazing what a difference turning the thing upside down does to your perspective of it. In this pic, the object is oriented as it would be in use. And the piece you've been puzzling over covers this area.
Don't feel bad, guys and gals - if I didn't know what it was already, this would be the first clue that might lead me to success. With the previous two shots, I wouldn't have been any more successful (and certainly not as inventively funny) as you lot.



Darned if I can identify it, though. Although from looking at this shot, it would appear that none of those components are in a movable condition at this time...
It's not a revolver, though.