Hey gang! I have an observation / question if I may. I recently took my new XD40-SC Bi-tone out for it's first trip to the range on Friday. (http://www.xdtalk.com/forums/sa-xd-...-first-time-out-thwarted-movie-shoot-ack.html) I'm not a total 'neat freak' per se (in denial)... but when I spend a decent amount of $ on stuff, I like to keep it as clean and 'like new' as possible. When cleaning the slide afterward, I noticed a LOT of black buildup where the back of the shell casing meets the slide / firing pin. I use Ballistol as my cleaning agent / lubricant. I had a b*tch of a time getting the aforementioned black buildup out of there. There are so many small edges and surfaces in that area of the slide. I realize that my Glock probably has the same gunk all over it, and I just can't see it on the black colored steel. 1. Am I being totally anal? Is this buildup simply a side effect of the large scale explosion happening just a few millimeters away? I don't see the gunk anywhere else in the slide. 2. If I'm not crazy... is there a suggested method for getting that stuff out of there? I'm weary of getting any Ballistol down in the internals of the slide. I'm also using a tooth brush with synthetic bristles. Is it acceptable to use a wire brush on the slide? I don't want to scratch it up. Thank you in advance for any help / suggestions... I'm trying to 'think out loud' here as best as possible to make the situation clear. If you guys want a photo of the 'gunk' I can attempt to upload one.