Moreover, it’s worth noting that the database is approximate. As the website already stated, a couple of vintage guns share serial numbers between models so if multiple models appear, simply match the proper date. Next, you need to hit search to see the result. Once you get to that page, enter all the characters and the numbers on your firearms into the search field. Step 2: Hover the mouse to “Customer Service”.Here is the way to get to that particular function. Fortunately, one of the functions happens to be the “Serial Number Lookup” which permit you to learn about your Colt guns using their serial numbers. Now is the age of Internet so Colt duly keeps itself up to date by introducing a website for customers that incorporate multiple helpful functions. In the case of Colt serial numbers, you have up to 3 available choices to choose from depending on your preference: There are a lot of ways for you to lookup serial numbers the firearms nowadays.