Mossberg® 590A1™ 9-Shot Speedfeed 12 Ga 3″ 20″ Barrel


SKU: MOS51668 Categories: , Tag:

The Mossberg 590A1 is the most durable of our pump action shotguns, meeting MIL-SPEC 3443G, with its heavy-walled barrel, metal trigger guard and safety, clean out mag tube, and Parkerized finish. Its hearty construction and proven endurance make it a prime choice for home defense applications.


  • 9-Shot
  • 12 Gauge
  • MIL-SPEC construction (MIL-S-3443E)
    • Heavy-Walled barrel
    • Metal trigger guard and safety button
    • Clean-out magazine tube
  • Drilled and tapped receiver
  • Various sight, stock, and forend configurations
  • Parkerized finish
  • Standard pump-action features include dual extractors, steel-to-steel lockup, top-mounted ambidextrous safety, twin action bars, and anti-jam elevator



Canada Legal Classification Non-Restricted Action Pump
Handedness Ambidextrous Optic Interface Drilled and Tapped Receiver for Mossberg 500, 590, 835
Rear Sight Receiver Mounted Fully Adjustable Protected Ghost Ring Front Sight Barrel Mounted Fixed Blade
Default Sight Radius (in; cm) ~24.4; 62 Grip Type Pistol Grip Checkered
Pistol Grip Cap Mossberg Logo Trigger Type Adjustable
Trigger Material Steel Trigger Compatibility Mossberg 500, 590
Min Trigger Pull (lbs; N) ~8; 35.6 Max Trigger Pull (lbs; N) ~8; 35.6
Observed Trigger Pull (lbs) ~8 Safety Manual 2-Position Tang
Manual Safety Position Upper Receiver Mounted, Centered Magazine Interface Fixed Tube
Magazine Compatibility Mossberg 590A1 w/ 20″ Barrel Magazine Capacity 8
Default Length (in; mm) 41; 1041.4 Min Length (in; mm) 41; 1041.4
Max Length (in; mm) 41; 1041.4 Min Width (in; mm) ~1.7; 45
Max Width (in; mm) ~1.7; 45 Min Height (in; mm) ~8.5; 215
Max Height (in; mm) ~8.5; 215 Weight w/o Magazine (lbs; kg) N/A
Weight w/ Empty Magazine (lbs; kg) 7; 3.17515 Accessory Interfaces Sling Stud Buttstock, Magazine Cap; Barrel Mounted Bayonet Lug


Operating Mechanism Twin Action Bars, Tilting Block Action Size 3″ Ejection Port
Receiver Type Mossberg 500A1 Lower Receiver Material Metal
Lower Receiver Finish Pakerized Upper Receiver Material Metal
Upper Receiver Finish Pakerized Stock Interfacing Mechanism Direct to Receiver via Threaded Stock Bolt
Stock Interfacing Mechanism Material Steel Stock Interfacing Mechanism Finish Standard
Barrel Interfacing Mechanism Direct to Receiver Barrel Securing Mechanism Threaded Magazine Cap; Locked Bolt
Barrel Securing Mechanism Material Steel; Steel Barrel Securing Mechanism Finish Parkerized
Recoil Lug None Recoil Lug Material N/A
Recoil Lug Finish N/A Feed Type Push
Ejection Receiver Mounted Spring Loaded Ejector Ejection Direction Right
Bolt Type (2) Piece Bolt Bolt Material Steel
Bolt Finish Parkerized Bolt Head Type Integral Part of Bolt
Bolt Lock (1) Bolt Contained Tilting Block Operating Handle Pump Forend
Operating Handle Material Steel w/ Synthetic Shell Operating Handle Finish Parkerized; Black
Bolt Hold Open None Bolt Release None
Trigger Guard Type Part of Trigger Group Trigger Guard Material Metal
Trigger Guard Finish Parkerized Trigger Guard Engraving None
Magazine Release Type None Magazine Release Position N/A
Magazine Cutoff None Anti-Release Magazine Lock Mechanism Threaded Magazine Cap


Stock Type Receiver Attached Speedfeed Pistol Grip Full Size w/ (4) Round Capacity Stock Material Synthetic
Stock Finish Matte Black Buttpad Rubber Textured Black
Adjustable Length of Pull No Min Length of Pull (in; cm) 13.87; 35.2298
Max Length of Pull (in; cm) 13.87; 35.2298 Adjustable Comb No
Min Drop at Comb (in; cm) ~1.9; 4.8 Max Drop at Comb (in; cm) ~1.9; 4.8
Min Drop at Heel (in; cm) ~2.3; 6 Max Drop at Heel (in; cm) ~2.3; 6
Adjustable Cast No Adjustable Pitch No


Forend Type Part of Action Forend Fit Mossberg 500, 590, Maverick 88 w/ 7 3/4″ Action Assemblies
Forend Material Synthetic Forend Finish Matte Black


Barrel Length (mm) 508 Caliber Marking 12 GA.
Chamber Size (mm) 76 Steel Shot Rated Yes
Barrel Profile Heavy Walled Barrel Material Steel
Barrel Finish Parkerized Chamber Finish Standard
Rifling None Twist Rate N/A
Choke Cylinder Bore Choke Thread None

Additional Information:

Manufacturer SKU 51668
Distributor Item Number 0902-0506


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12 Gauge





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