Tightening a barrel

[lugercollector]

I replace barrels on Lugers on a regular basis....In Canada a 110 mm Barrel on a Luger makes it legal to own for most people whereas a 100 mm(4") Luger is considered a prohibited Firearm.....I work in conjunction with a machine shop and we make the barrels from scratch from rifled 9mm blanks....The best way we have found for proper indexing is to use an old receiver(as a guide),machine the threads and tighten up the barrel to the receiver....make a witness mark at he bottom of the barrel....remove the barrel and then machine the front sight 180 Degrees from the witness mark....the barrel will then install with the correct tension and vertical alignment.......Attached are some photos....