Mossberg120915626
Mossberg 590A1 M-Lok 18.5" 12 Gauge Pump Shotgun - Model 50765$656.77
Availability: In Stock
The Mossberg 590A1 is a proven 12-gauge pump shotgun built to handle serious work. With an 18.5" barrel, 3" chamber, and M-Lok foregrip compatibility, this is a no-nonsense home defense and tactical shotgun that meets MIL-SPEC 3443G standards—the same durability spec that made it a workhorse for military and law enforcement. If you want a shotgun that prioritizes reliability and endurance over frills, the 590A1 delivers.
What sets the 590A1 apart is its heavy-walled barrel construction and steel-to-steel lockup, paired with dual extractors and twin action bars to keep the gun cycling reliably under stress. The metal trigger guard and safety won't flex or fail, and the Parkerized finish resists corrosion in harsh conditions. The receiver is drilled and tapped so you can mount optics or add accessories as your needs evolve. The clean-out magazine tube design makes maintenance straightforward—no hidden debris traps.
The ambidextrous top-mounted safety sits where your thumb naturally rests, and the anti-jam elevator keeps rounds feeding smoothly even in rapid-fire sequences. This is field-proven platform that's been trusted for decades, and the M-Lok rail system gives you modern attachment options for lights, grips, or other gear. Whether you're setting up for home defense, patrol, or serious shotgun sport, the 590A1's reputation for durability and simplicity speaks for itself.
| Gauge | 12 |
| Barrel Length | 18.5" |
| Chamber | 3" |
| Action | Pump/Slide |
| Rail System | M-Lok |
| Finish | Parkerized (Black) |
| Model Number | 50766 |
| Receiver | Drilled and Tapped |
| Extractors | Dual |
| Action Bars | Twin |
| Safety | Ambidextrous Top-Mounted |
The 590A1 is built to MIL-SPEC 3443G standards, meaning it meets military durability and reliability requirements. The heavy-walled barrel, dual extractors, steel-to-steel lockup, and all-metal trigger guard and safety separate it from lighter-duty models. It's engineered for sustained, demanding use.
Yes. The receiver is drilled and tapped for optics mounts, and the M-Lok foregrip rail lets you attach tactical lights, grips, and other accessories. You have modern customization options out of the box.
The 3" chamber handles both standard 2.75" and magnum 3" shotgun shells in 12 gauge. Verify your specific load selection with ammunition manufacturers for compatibility with your intended use.
Yes—the 18.5" barrel makes it maneuverable indoors, the short length suits tight spaces, and the MIL-SPEC construction ensures reliability when it matters. The pump action and ambidextrous safety are intuitive under stress. Many home defense setups use the 590A1 platform for exactly these reasons.
SKU: 120918052 • Width: 7.8in • Height: 2.8in • Depth: 42.8in • Weight: 8.7oz
Availability: In Stock
The Mossberg 590A1 is a proven 12-gauge pump shotgun built to handle serious work. With an 18.5" barrel, 3" chamber, and M-Lok foregrip compatibility, this is a no-nonsense home defense and tactical shotgun that meets MIL-SPEC 3443G standards—the same durability spec that made it a workhorse for military and law enforcement. If you want a shotgun that prioritizes reliability and endurance over frills, the 590A1 delivers.
What sets the 590A1 apart is its heavy-walled barrel construction and steel-to-steel lockup, paired with dual extractors and twin action bars to keep the gun cycling reliably under stress. The metal trigger guard and safety won't flex or fail, and the Parkerized finish resists corrosion in harsh conditions. The receiver is drilled and tapped so you can mount optics or add accessories as your needs evolve. The clean-out magazine tube design makes maintenance straightforward—no hidden debris traps.
The ambidextrous top-mounted safety sits where your thumb naturally rests, and the anti-jam elevator keeps rounds feeding smoothly even in rapid-fire sequences. This is field-proven platform that's been trusted for decades, and the M-Lok rail system gives you modern attachment options for lights, grips, or other gear. Whether you're setting up for home defense, patrol, or serious shotgun sport, the 590A1's reputation for durability and simplicity speaks for itself.
| Gauge | 12 |
| Barrel Length | 18.5" |
| Chamber | 3" |
| Action | Pump/Slide |
| Rail System | M-Lok |
| Finish | Parkerized (Black) |
| Model Number | 50766 |
| Receiver | Drilled and Tapped |
| Extractors | Dual |
| Action Bars | Twin |
| Safety | Ambidextrous Top-Mounted |
The 590A1 is built to MIL-SPEC 3443G standards, meaning it meets military durability and reliability requirements. The heavy-walled barrel, dual extractors, steel-to-steel lockup, and all-metal trigger guard and safety separate it from lighter-duty models. It's engineered for sustained, demanding use.
Yes. The receiver is drilled and tapped for optics mounts, and the M-Lok foregrip rail lets you attach tactical lights, grips, and other accessories. You have modern customization options out of the box.
The 3" chamber handles both standard 2.75" and magnum 3" shotgun shells in 12 gauge. Verify your specific load selection with ammunition manufacturers for compatibility with your intended use.
Yes—the 18.5" barrel makes it maneuverable indoors, the short length suits tight spaces, and the MIL-SPEC construction ensures reliability when it matters. The pump action and ambidextrous safety are intuitive under stress. Many home defense setups use the 590A1 platform for exactly these reasons.
SKU: 120918052 • Width: 7.8in • Height: 2.8in • Depth: 42.8in • Weight: 8.7oz