Thanks Ripp and Lancaster. It makes sense.

I note this Luger does not have the 'button' on the back of the grip needing to be depressed for the Luger to fire. How easy or hard does this make such a Luger to fire? I think it would be annoying.

These evil little handguns with the evil buttstocks able to be attached if the two are put together would be untrustable in such an untrustworthy law abiding Australian as I.

Making a handgun into an evil semi auto carbine.

I would love one of these with all the setup. As well as a Mauser with a similar setup. My guess is if I never assembled them, I might be legally OK.