I am trying to determine if the factory mags are blued or finished with another type of coating. If they are blued is there a concern with rust ?
I went thru the approximately 20 M-A1 mags I could easily lay my hands upon and found one, a 10-rd 9mm magazine that had remnants of rust freckles. IIRC, it was after a rainy match and a few mags were put away in a wet tool bag pocket. When I pulled them out later they had rust freckles that I hit with oil and a green scrubby.I think I have some 9mm mags for my A1 that developed rust freckles. I’ll try and check.