For guns made after World War II, serial numbers or a combination of letters and numbers will aim you to the manufacturing year.Look closely at your gun to make sure it is a Sweet 16, 16-gauge shotgun and not a standard 16-gauge shotgun.Use the links below and please have your model and serial number handy so you can provide it on the corresponding pages in order to find out when your gun was made.Visit Colt 1911 Website Colt is known for creating some of the highest quality firearms including the 1911 pistol supported by numerous other awesome standard and tactical pieces of equipment, from rifles to shotguns.Visit Glock Perfection Website Here you will find the Glock Talk forums where you can search and chat with individuals who own glocks and can share information with you on finding out "When was your glock made?" Just click the register link on the top left to start.(Manufactured from 1968 to 1984)Calibers: 22-250 Rem, 223, 220 Swift, 6mm Rem, 65mm, 243, 257, 25-06 Rem, 250/3000, 264 Win, 270 Win, 280, 284 Win, 7x57, 7mm Rem., 7mm-08 Rem, 30-06 Sprg, 300 Win Mag, 308 Win, 338 Win, 350 Rem, 35 Whelan, 358 Win Mag, 416 Taylor, 458 Win Mag, 458 Rem Mag The above chart shows the approximate first serial number shipped for the indicated year.
For official references, usually the finished and issued rifle was tracked by its rack number and of course these records have long since been destroyed or lost forever.
It is not uncommon to find the "3" stamped backwards.
For those rifles manufactured prior to 1921, rifles not found with a date code, or rifles found with ONLY a repair code, these will be dated best by using the serial number list at the bottom of the page.
They provide every spec about the gun, who is was shipped to, when it was shipped, and even how many other firearms were shipped at the same time as yours.
You can find the order form and specifications of Colt Manufacturing's archival service here.
Now that you've verified that you have a Sweet 16, rather than a standard 16-gauge shotgun, follow the rest of the steps to find when it was manufactured. Engraved on the bottom of the receiver will be the serial number.