The gage or caliber of a firearm is typically stamped on which part?

The caliber or gauge of a firearm is generally stamped on the side of the barrel. This is because the barrel is the component that accommodates the cartridge or shotshell, and labeling it with the caliber helps ensure that the proper ammunition is used. Knowing the caliber is crucial for safety, as using the incorrect type of ammunition can lead to malfunctions or even catastrophic failures.

The other components, such as the stock, trigger guard, and magazine, do not typically bear this important information. The stock is primarily for the shooter's grip and does not generally provide technical specifications about the firearm’s ammunition. The trigger guard is designed for safety, protecting the trigger from accidental discharges, and is not a place for labeling. The magazine, while it holds the ammunition, does not usually indicate the caliber or gauge of the ammunition it is meant to hold.