Thanks for the replies.
Rob: yes, a couple of images of the barrel breech end would be great.
Perry: I gather the thread profile is a Buttress Thread, but that it is also interrupted to enable the breech to be pushed on and turned through about 1/6th of a turn from the 'disengaged' to the 'locked' position?
At this stage of the game, a few images of jacket and barrel ends is all we are after.
Thanks
Mike
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