Picked it up on Thursday. Got it for $479.99 at a local retailer. I have been to the range twice with it since then and have shot about 250 rounds through it. I finally cleaned it today. Here are some pics. I still have my S&W Sigma 9mm which I may keep or possibly sell to a friend. When I pulled the slide off the gun earlier to clean it, I noticed on the left side there was metal shavings of a copper color. I couldn't get a very good pic of it, but it looked as if something was rubbing along the slide rail. Is this normal for a Glock?