One of my Artillery Luger's had an incorrect rear sight so I purchased an NOS (New Old Stock) (not fine tune) sight from a reputable dealer and had it installed by a forum member who also confirmed that it was an NOS sight, but after having it installed I noticed that it does not fit down into the notch in the receiver, at it's lowest point there is a gap of almost 1.5mm, or about 1/16". The barrel extension is a 1914 with a 1920 property stamp. My question is "weren't all artillery's and both types of rear sights made to the same specs so that they would be interchangeable?" I know that a certain amount of hand fitting is necessary to get everything to fit together properly but this has me stumped, anyone have any ideas?
