SKU: MS50768
UPC: 015813507684
MPN: 50768
The Mossberg 590A1 12/20 +4 rounds M-LOK rail system pump-action shotgun is a proven combat and duty platform built for professionals who demand reliability under extreme conditions. Developed from decades of law enforcement and military feedback, this shotgun delivers consistent performance in breaching, close-quarters battle, and tactical operations where split-second reliability is non-negotiable. The +4 round capacity extension maximizes ammunition availability without sacrificing handling characteristics, while the integrated M-LOK rail system provides operators with a modular mounting solution for tactical accessories.
The 590A1 employs a dual-tube magazine system with fast-loading tube selection, allowing shooters to switch between different ammunition types (12-gauge and 20-gauge capability) without manual intervention—a critical advantage in dynamic tactical environments. The pump-action mechanism is tuned for smooth cycling under high round counts and stress conditions, with a steel receiver that withstands repeated use and demanding training cycles. At 9.5 pounds and 42.75 inches overall length, the platform balances substantial firepower with maneuverability in confined spaces such as vehicle entries or building clearance operations. The M-LOK rail architecture accommodates modern tactical lights, laser designators, and aiming systems, enabling force multiplication through optic-ready customization.
This shotgun is purpose-built for tactical law enforcement units, military personnel, and professional security teams conducting close-quarters operations. The 590A1's reputation for durability under adverse conditions—mud, sand, salt water, and extreme temperatures—makes it the choice of elite units worldwide. Installation of M-LOK-compatible accessories requires no gunsmithing; simply engage the standardized fastening system to mount your optic or accessory rail. Proper maintenance and regular function testing ensure reliable performance across both 12 and 20-gauge loads, making this platform an investment in operational readiness that will perform for decades of active service.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
Mossberg
