Carbine Question

[sheepherder]

Originally Posted by Ron Wood

It is on the bottom of the barrel under the rear sight and...

Ron, I've seen pics of Luger carbines with Navy rear sights on the toggle, and several different 2 & 4 position barrel mounted rear sights, as well as a carbine using a barrel mount artillery rear sight. Is the serial on the barrel done the same way as on a P08??? That is, land diameter under the serial, both stamped perpendicularly to the bore axis???

I am trying to visualize a T-slot or dovetail for a forearm extension, and where one could relocate the serial. I would have thought the carbine maker would put the serial where it could easily be seen...

Thanks for the pics, Eric!