The receivers and the Slide are made of a High Carbon Alloys ,the barrels are a lot softer for some reason . I did a Rockwell; and a Halliburton test on the Barrel of one luger was worn out and they are surprisingly soft.
But the Barrels on handguns need to be soft to a point.,
The harmonics of the ignition and the compression of the bullet into the rileing would shatter anything that was to hard.
Yes a Luger Barrel will twist very easily with the Torque being put on them during installation.
Ive done it ,.and i have seen ti done several times , Mostly when a guns owner didn't like the fact that the front sight was pegged all the way to one side to correct windage.
That situation does look retarded , and it still takes a while for them to say OK to twisting their barrels a tiny bit .
But they like it a lot more later.
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