The Mossberg 590 Tactical M-Lok is a 12-gauge pump-action shotgun with 8+1 capacity, 20-inch barrel, 3-inch chamber, and ghost ring sights. It weighs approximately 7.25 lbs. with a matte blued receiver and black synthetic stock. 
 

Key Specifications 

• Manufacturer: Mossberg 
• Model: 590 Tactical M-Lok 
• Gauge: 12 GA 
• Capacity: 8+1 rounds 
• Chamber Size: 3" 
• Barrel Length: 20" 
• Weight: Approximately 7.25 lbs. 
• Overall Length: 41" 
• Sights/Base: Ghost Ring Sights 
• Finish: Matte Blued Receiver with Black Synthetic Stock 
   

Detailed Features 

Ghost ring sights allow for quick target acquisition under stress. The M-Lok forend accepts lights, grips, and other accessories without any rail adapter needed. The pump action runs reliably under varying conditions. An included cylinder bore choke tube is appropriate for defensive distances. The 590's aluminum receiver keeps weight manageable, and the top-tang safety is accessible without shifting grip. 
 

Usage Scenarios 

The 8+1 capacity and ghost ring sights make this a credible home defense platform. The M-Lok forend is a practical advantage for adding a light or vertical grip. The 20-inch barrel keeps the overall length at 41 inches, which is manageable in indoor environments.

The Mossberg 590 Tactical M-Lok gets strong marks from owners for reliability and capacity. The 8+1 round count is frequently cited as a key reason for choosing it, and the ghost ring sights are appreciated for fast target acquisition. Most owners describe the pump cycling as smooth and dependable.

The M-Lok forend customization is a positive differentiator versus older Mossberg models, and owners who have added accessories report the system working well.

Critical feedback focuses on weight — at around 7.25 lbs., a few owners find it heavy for extended use. Recoil with heavier 12 gauge loads is mentioned, though this is inherent to the gauge. Some note the finish isn't as durable as they'd expect over time. Price comparisons occasionally come up, with most owners concluding the capacity and feature set justify the cost.