I haven't noticed other threads related to this but after putting a couple of hundred rounds through my Glocks it starts to jam. Whenever this occurs I find tiny brass slithers stuck under/behind the extractor and around the firing pin, firing pin block. I'm not sure if other people are anal enough to disassemble their slides for cleaning but if you don't it's worth a look every now and then. FYI: this is the only reason why my Glocks jam. (G35, G27) Maybe it shaves the slithers off when it chambers a round?