Should "Neat Freaks" avoid Bi-tone? / Cleaning Question

[GFunk]

Originally Posted by Acerimmer

My old bruniral or whatever finish XD9 has a brass colored circle around the firing pin hole. Brass brush wont get it off with any solvents I use. I could bust out the Dremel, but I just aint worried about it.

My only guess is the brass case getting slammed into that part of the gun, but I do wonder why mine is brass colored while yall's is black.

Maybe it just looks darker on yall's stainless slides.

Same here...old XD9 - brass circle around the firing pin. My assumption is when the shell is pushing back on the slide it is vibrating slightly and basically filled in any tiny imperfections in the slide with brass bits.

Anyone else (out of boredom and curiousity) hold their weak hand on the back of the slide when firing to force it to stay in battery? I did this with my .22 pistol and it left a ringing sensation in my hand. That's where I get my vibrating brass theory from.

[JonXD]

Just keep shooting don't worry about it! Clean it after range time and your golden.