1. Firearms
  3. Used Guns

Mossberg 20 Gauge Used Guns

When it comes to firearms, you need something you can rely on. The best part of used guns is you know every single one has been used in the field. Our collection of used shotguns gets you tried-and-true shotguns from top manufacturers. Shop 20 GAs for sale at Sportsman's Outdoor Superstore.

MOSSBERG MODEL 88 20 GA USED

Mossberg Maverick 88 20 Gauge Police Trade-in Pump Shotgun

  • $169.99
In Stock
  • Brand: Mossberg
  • Item Number: MV0195421
510 20 GAUGE POLICE TRADE-IN PUMP SHOTGUN

Mossberg 510 20 Gauge Police Trade-In Pump Shotgun

  • $349.99
  • Brand: Mossberg
  • Item Number: 510 TRADE
500C 20GA USED

Mossberg 500C 20 Gauge Used Trade-in Pump Action Shotgun

  • $199.99
85 20 GAUGE POLICE TRADE-IN SHOTGUN

Mossberg 85 20 Gauge Police Trade-In Shotgun

  • $249.99
MAVERICK 500CT 20 GAUGE POLICE TRADE-IN SHOTGUN

Mossberg Maverick 500CT 20 Gauge Police Trade-In Shotgun

  • $249.99
500 20 GAUGE POLICE TRADE-IN PUMP SHOTGUN

Mossberg 500 20 Gauge Police Trade-In Pump Shotgun

  • $299.99
500 20GA SHOTGUN USED

Mossberg 500 20 Gauge Police Trade-In Shotgun with 26 Inch Barrel

  • $249.99
MOSSBERG 500C TRADE

Mossberg 500C 20 Gauge Police Trade-In Shotgun with Wood Stock

  • $229.99
MOSSBERG 500C TRADE

Mossberg 500C 20 Gauge Police Trade-In Shotgun with Wood Stock

  • $249.99
MOSSBERG 500C TRADE

Mossberg 500C 20 Gauge Police Trade-In Shotgun with Synthetic Stock

  • $169.99
MOSSBERG 500C TRADE

Mossberg 500C 20 Gauge Police Trade-In Shotgun with Wood Stock

  • $249.99
500 20GA SHOTGUN USED

Mossberg 500 20 Gauge Police Trade-In Shotgun with 26 Inch Barrel

  • $249.99
500 20GA USED

Mossberg 500 20 Gauge Police Trade-In Shotgun with Synthetic Stock

  • $249.99
590 20GA PISTOL GRIP USED

Mossberg 590 Shockwave 20 Gauge Used Trade-In Shotgun

  • $349.99
MOSSBERG 500 20 GA TRADE

Mossberg 500 20 Gauge Police Trade-In Shotgun with 22 Inch Barrel

  • $219.99
MOSSBERG 500 20GA TRADE

Mossberg 500 20 Gauge Police Trade-In Shotgun with Mossy Oak Camo and Two Barrels

  • $299.99
MOSSBERG 500 20GA TRADE

Mossberg 500 20 Gauge Police Trade-In Shotgun with Optic and Rifled Barrel

  • $249.99

Quality Shotguns at Discounted Prices

What's the difference between used guns and new guns? One has already proved its worth in the field.

Our used shotguns for sale come in a variety of conditions, from fair to basically brand new. And since they're made with the same care as the rest of our shotguns, they're just as functional as our new guns for sale. You just need to be okay with a few blemishes.

Interested in a used gun that isn't one of our 20 GAs for sale? We have an entire collection of police trade-in Glocks, all meticulously maintained during their time in service. Or, if you want a tactical weapon, find your next gun in our selection of used Class III firearms.

Great Guns, Great Service

Since 2007, Sportsman's Outdoor Superstore has grown into a giant gun shop with a massive inventory of high-quality firearms, all sold at competitive prices. But it's not just our guns that we're known for. It's our service.

All of our used shotguns for sale (as well as our other used guns) come with our 30-day money-back guarantee. If something's wrong with your weapon or you decided you wanted something else, you can return it to us for a full refund — no questions asked. Guns ship nationwide, and because all of our guns are in stock when ordered, they ship out fast. Plus, if you live in the lower 48 states, your shipping is free.

Have questions? Our in-house customer service is always available to help. Find the firearms you need today at Sportsman's Outdoor Superstore.

Frequently Asked Questions

Are your used shotguns for sale still functional?

Yes, all of our used firearms still perform great. In general, if a gun was made properly, wear and tear wouldn't really impact functionality. It will have blemishes, and maybe some dings, but the only damage that does to the gun is to its aesthetics. If you do have issues with your shotgun, it comes with a 30-day return policy. Your purchase is risk-free.

Will one of your 20 GAs for sale stop an intruder?

20 GA shotguns have the stopping power to be used for home defense. However, as they were designed for bird hunting, they're not as effective as shotguns chambered for other gauges. A 12 GA shotgun has both ample stopping power and high penetration, making it a better option for a dedicated home defense weapon.

Do your used shotguns for sale ship directly to my home?

No. Every firearm order must be sent to a local FFL dealer for pickup. We do not deliver to residential addresses. Make sure to get permission from your chosen gun store before ordering!

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