Serial # is 9256XXX. I comprehend it was in a VA police dept It truly is complete life and I believe it was made around 74-75 timeframe. No more engraving or markings from dept, selector marked Secure-semi-car. Hope that helps the database Tony. When you stumble throughout any info regarding https://madesocials.com/story3942184/the-greatest-guide-to-colt-m16a1-for-sale