I didn't know where in this forum to post this question but since what I have read says the E9 is an "economy" version of the K9 I thought I would get better answers here...anyway, my question is what finish is on the frame of my duo tone E9, I am picking it up tomorrow , it has the stainless looking lower and black slide, I have read that the E pistols are carbon steel vs the stainless that the K9 is, so I'm wondering if the E9 is carbon steel what did kahr use to finish the lower frame.