Pitting on frame rails
 

Hi fellow Luger owners, I acquired a pristine DWM piece probably from 1930s (3 digit serial), but rails on the frame are pitted quite deeply on some places, however it doesn't seem to affect the operation and it runs smoothly. Should I be concerned and does this require a repair in order to not get worse soon?

The slide doesn't seem that pitted, just at the ends.

https://i.ibb.co/vvpn8vS/20240923-171316.jpg
https://i.ibb.co/GtWz65r/20240923-224947.jpg
https://i.ibb.co/VYV7qzV/20240923-220931.jpg
https://i.ibb.co/pb9fZJ5/20240923-225025.jpg

I would guess your gun is older than the 1930’s based on the long sear bar. I also suspect it was refinished (quite nicely I might add) unless the picture angles are hiding that the pitted frame rails are still in the white

Oh yes finish is absolutely stunning when the gun is all assembled, looks like brand new, no signs of pitting on exterior parts. The rails however not so much. Makes you wonder how did this happen then. Barrel looks like new too.

The heavy pitting is most likely why someone refinished the pistol.
I would leave it alone, unless you suspect it's creating a lot of friction or the gun misfires.
Even then, you can grease the rails.

A good gunsmith could file the rails for you, but I doubt it will ever be necessary.

If it shoots ok, then leave it be :)

Light synthetic grease is usually better than oil on frame rails of any handgun, IMHO. This is especially true if dealing with pitted surfaces.

One really good light synthetic grease that I like and use on my handguns is SuperLube. Here's an Amazon link to it if anyone is interested. $8.50 in a 3 oz tube or $18 in a 14 oz can. The link is for the can.

https://www.amazon.com/Super-Lube-41...05&sr=8-1&th=1