The Mossberg 590A1 Professional Series is a field-proven, duty-grade pump-action shotgun designed to meet the rigorous demands of military, law enforcement, and serious defensive applications. Featuring a heavy-walled barrel, metal trigger guard, and durable Cerakote finish, this shotgun delivers unparalleled durability and reliability in any environment. Key Features: Heavy-Walled 18.5" Barrel - Enhanced strength for increased durability. Optic-Ready Receiver - Pre-installed Ghost Ring rear sight with fiber optic front, compatible with RMSc footprint micro dots. Cerakote Tungsten Finish - Corrosion-resistant polymer-ceramic coating for extreme durability. Adjustable Length of Pull (12"-13") - Customizable fit with a compact variable LOP stock. Steel-to-Steel Lockup - Ensures consistent and reliable cycling. Twin Action Bars & Anti-Jam Elevator - Smooth operation and reduced risk of malfunctions. Top-Mounted Ambidextrous Safety - Easy, intuitive control for left- and right-handed shooters. Clean-Out Magazine Tube - Simplifies maintenance and enhances reliability. Chambered for 12 Gauge, 3" Shells - Compatible with both 2.75" and 3" loads. Specifications: Gauge: 12 GA Action: Pump-Action Chamber Size: 3" Barrel Length: 18.5" (Heavy-Walled) Barrel Finish: Cerakote Tungsten Choke: Cylinder Bore Capacity: 6+1 Overall Length: 37.75" Length of Pull: 12"-13" (Adjustable) Stock: Black Synthetic with Spacer Sights: Metal Ghost Ring Rear / Fiber Optic Front, Optic-Ready Weight: 6.75 lbs