What is the minimum legal barrel length for a shotgun?

The minimum legal barrel length for a shotgun is more than 18 inches. This regulation is defined under the National Firearms Act (NFA), which classifies shotguns as firearms with specific size requirements. A shotgun can be possessed legally with a barrel that measures more than 18 inches, ensuring it meets legal definitions and classifications. This measurement is crucial for differentiating categories of firearms and maintaining compliance with federal regulations.

In practical terms, shorter barrels may significantly affect the weapon's function and handling characteristics, which is why the law sets this minimum threshold. Thus, shotguns are generally understood to be designed for specific purposes that warrant a barrel length that exceeds this legal requirement. Understanding these legal specifications is essential for anyone involved in law enforcement, firearms training, or ownership to ensure they operate within the confines of the law.