Mossberg SA-20, SA-28 & SA-410 Shotguns
The SA-20, SA-28 and SA-410 are the semi-auto shotguns Mossberg sells under its Mossberg International name: the SA-20 in 20 gauge, the SA-28 in 28 gauge and the SA-410 in 410 bore. Our listings include Field, Turkey and Bantam versions. When they are sold out, the listings stay here so you can see what we carry.Mossberg International semi-autos in 20 gauge, 28 gauge and 410.
Listings as of Nov 13, 2026.
Pick your SA
Every SA model we list, with the count in stock and the lowest price for each.
All SA shotguns
0 in stock. Sold out listings stay up, after the ones you can buy today.
SA models
Our SA-20 listings run from 20 to 28 inch barrels, with Field, Turkey, Bantam and pistol grip versions. The SA-28 is listed with 21 to 26 inch barrels, and the SA-410 with 22 and 26 inch barrels in Field and Turkey versions. In stock now: SA-20 (0), SA-28 (0), SA-410 (0).
Other Mossberg semi-autos
For a 12 gauge semi-auto, see the 940 Pro, the 930 and the 935 Magnum. For an over/under in the smaller gauges, see the Silver Reserve.
Buying a shotgun online
Chokes, barrels and most parts ship to your door where your state allows. Check state restrictions before you order, and read how buying a gun online works. Firearms can go on layaway, and financing shows at checkout when the order qualifies.
More Mossberg lines
Mossberg SA FAQ
What gauges do the Mossberg SA shotguns come in?
The SA-20 is 20 gauge, the SA-28 is 28 gauge and the SA-410 is 410 bore.
Do you have the Mossberg SA-20 in stock?
In stock as of Nov 13, 2026: 0. Stock changes daily, and listings that sell out stay on this page after the ones you can buy today.
Do you ship Mossberg shotguns to my house?
No. A firearm bought online ships to a licensed dealer (FFL) you pick at checkout, and you fill out the transfer paperwork there. Chokes and most parts ship to your door where your state allows.