How old is my American gun company 16 gauge serial 345527?

To determine the age of your American Gun Company 16 gauge shotgun with serial number 345527, you'll need to identify the manufacturer, as different companies have their own dating systems based on serial numbers. You can typically find this information through the manufacturer's records or by consulting a firearms expert. Additionally, many firearm collectors and historians have compiled databases that might help in dating your specific model. If you provide the manufacturer's name, I may be able to assist you further.