What information is typically found stamped on the side of a rifle's barrel?

The information typically stamped on the side of a rifle's barrel often includes the caliber of the firearm. The caliber, which identifies the internal diameter of the barrel and therefore the size of the ammunition that the firearm can safely use, is crucial for ensuring that the correct ammunition is selected for shooting. This stamping helps shooters quickly identify the right cartridge for their weapon, as using the incorrect caliber can lead to malfunctions or dangerous situations.

While other details like the model of the firearm, the date of manufacture, and the name of the manufacturer are important for identification and legal purposes, they are not always stamped directly on the barrel itself. The caliber is specifically required for safety and functionality, making it a standard practice to mark this information clearly on the barrel.