Does anyone know anything about the Colt custom shop? I have an AR-15 match target competition h-bar that has a custom shop label (with a custom #) on the box. I called colt customer service to see if they could tell me what has been done to it. He ran the serial number and couldn't tell me anything, he then sent me to archives where the guy told me he's never even seen a custom shop label (he had me describe the label to him) and said he could order the report for me but he's not sure it would even say (that of course is one of their fantastic $100 reports, no thanks!!) Just wondering if there's any way I can find out what's been done to it. Appearance wise, it looks the same.