Whats are the holes for!!

[cirelaw]

Tks I consider oiling holes but the mags have one side wide open for oiling when neccesary. The small holes seems the issue. Its present on ever type or maker I own one from the police and 2 matching to my Kreighoff. I imagine it had to have been made with the first luger prototype. Each was worthless without one another. They all seem to be interchangeable the 9mm or 7.65mm. Pure perfection and still in use a 110 years later. ~~Eric