Serial # Is 9256XXX. I know it was in a very VA law enforcement dept it's overall existence and I believe it was created close to 74-seventy five timeframe. No extra engraving or markings from dept, selector marked Harmless-semi-vehicle. Hope that helps the database Tony. When you stumble across any https://alexislmmjh.blogerus.com/53745027/indicators-on-colt-m16a1-for-sale-you-should-know