I picked up a CCO size Springfield ser# letters are NMC. It is a beautiful blued gun with walnut grips. It has a commander hammer, and a short grip safety. It has a short trigger. The box is a white and blue cardboard box. The box in nearly as cool as the gun. It has all of its paperwork and kibbles. The part number is P19502. It may be a couple of days before I get pics up. The guy I bought it from bought it new, he said 15 years ago. He thinks he shot it, but it appears unfired. The original price on the box says $523.00 It's beautiful, but does anyone know anything more? I looked around briefly on the internet but didn't find anything. Thanks for any info! ETA, single safety, rear serrations only, it says COMPACT CAL 45 on one side, and SPRINGFIELD ARMORY on the other.The trigger is crisp. The guide rod plug has what appears to be a flat slot in it.