Mossberg 590A1 M-Lok 20" 12 Gauge 3" Pump Action Shotgun - Black (Model 50768)
- Capacity-Rounds:
- 8
- Caliber-Gauge:
- 12 Gauge
- Hand:
- Right Hand
- Barrel Length:
- 20"
- Barrel Length Range:
- 20" to 21.99"
- OAL:
- 41"
- Chamber:
- 3"
- Weight:
- 7 lbs
- Metal Finish Group:
- Blued/Black
- Action:
- Pump
- Stock Finish Group:
- Black
- Stock Description:
- Fixed w/Storage Compartment
- Metal Finish:
- Black Parkerized
- Sights:
- XS Ghost Ring
- Weight Range:
- 7 lbs to 7.99 lbs
- Barrel Description:
- Heavy-Walled
- Chokes Included:
- Cylinder Bore
The Mossberg 590A1 M-Lok 20" 12 gauge pump action shotgun is a combat-proven, duty-grade scattergun built for hunters and shooters who demand reliability in demanding conditions. This 3" chamber model feeds and cycles with the kind of mechanical certainty you want when it counts—whether you're running it at the range, in the field, or in a defensive role. The 590A1 lineage goes back to military and law enforcement use, and this variant adds modern ergonomic flexibility through its integrated M-Lok forend, letting you mount lights, grips, or other tactical accessories without the need for proprietary rails.
The 20-inch heavy-walled barrel and parkerized finish are engineered for durability and fast handling. You get an XS Ghost Ring sight system standard, which means you're not relying on a bead—ghost rings give you a wider sight picture and faster target acquisition in low light or high-stress situations. The cylinder bore choke keeps your shot pattern open for versatility across ammunition types and distances. An 8+1 capacity means you're carrying nine rounds ready to go, and the synthetic black stock with integrated shell storage keeps four extra shells within immediate reach on the forend itself.
Built on the proven 590A1 platform, this shotgun tolerates neglect better than most—it'll run dirty, wet, and hot without complaint. At 7 pounds with a 41-inch overall length, it balances portability with enough mass to manage recoil. The fixed 13.87-inch length of pull suits most shooters as-is, but the modular furniture approach opens the door to customization if your needs evolve. Whether you're setting up a truck gun, a home defense option, or a versatile hunting platform, the 590A1 M-Lok delivers serious capability in a no-nonsense package.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
Email: [email protected]
- Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
- The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
- The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
- Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
- Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
- Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.

