First Luger, (1916 DWM) question on origin (mismatched parts)

[DevilofFallujah]

Hi Guys,
Recently picked up my first luger, a 1916 DWM. I am a long time m1911 and m9 user from my time in the service, but i recently got hooked on weapons of the Great War.

I wanted to reach out to the vets of the forum to see if they could tell me a little about the different parts of this mismatched luger. I was a little leery buying a mismatched luger because of the rumors of lugers did not leave room in the way of temperament for weather/dirt/thermal expansion, but let me tell you, I put a box of 50 rounds through her with no stoppages! Very impressive ... especially for a 101 year old mutt!

Also, any insight on the magazine and holster?