Hi Michael... well, to keep it short.. a'lot can be done in just the sear notch location.. keeping it a 90% as designed, polished, build up.. cut back, shortened, lengthened, what ever suits the unique demands that each Luger would require.. I'm not saying is SHOULD be done..
.. I'm just saying it could be done... And, of course, a luger with .020" slop between the cannon ass'y and frame would not be a cantidiate for this type of work!!! ...
... As mentioned earlier.. it just takes a crap pot full of parts, and time, and money, and all three escape me! ...
.. I've seen it before.. in just about evey thing i ever tried to compete in..
....Best to you Michael, til...lat'r...GT