The Mossberg 500A with an 18" barrel is the classic “security” or home defense configuration of the legendary 500 series pump shotgun. Known for its rugged reliability and simple design, the 500 platform has sold millions worldwideand is widely regarded as one of the most dependable pump shotguns ever made.

This configuration features an 18"–18.5" barrel, making it compact, maneuverable, and ideal for defensive use or close-range applications. The shorter barrel typically uses a cylinder bore, optimized for buckshot or defensive loads rather than long-range hunting.

The Mossberg 500A is built with:

• Dual extractors and twin action bars for smooth, reliable cycling
• Top-mounted ambidextrous safety (great for left or right-handed use)
• Steel-to-steel lockup and anti-jam elevator for durability and reliability