This specific shotgun barrel configuration integrates a mounting point for a bayonet. It’s designed for use with the Mossberg 590 shotgun, a popular pump-action firearm known for its reliability and modularity. A typical example features a heavy-walled construction and a parkerized finish for durability.
The addition of a bayonet mount expands the weapon’s versatility, providing a close-quarters combat option. Historically, bayonets have played a significant role in military and law enforcement applications. This feature enhances the 590’s suitability for defensive purposes, offering an additional layer of protection in extreme circumstances.