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Mossberg 990 AfterShock

The 990 AfterShock is Mossberg's semi-auto 12 gauge with its AfterShock grip in place of a shoulder stock. Mossberg lists it with a 3 inch chamber and a 14.75 or 18.5 inch barrel, and we list the AfterShock and the AfterShock SPX. Every count and price on this page is live.Mossberg's semi-auto 12 gauge with the AfterShock grip and no stock.

3In stock
$836.24Lowest price
2Models
1Gauge
Shop all 3 Compare models

Prices from $836.24 to $929.91, as of Nov 13, 2026.

Mossberg 990 AfterShock 12 Gauge 14.75 in 5+1 Matte Blue990 AfterShock12 Gauge · 14.75 in · 5 rd$877.07

Pick your 990 AfterShock

Every 990 AfterShock model we list, with the count in stock and the lowest price for each.

Mossberg 990 AfterShock 990 AfterShock990 AfterShock14.75 in barrel · 5 rd2 in stockfrom $836.24Mossberg 990 AfterShock 990 AfterShock SPX990 AfterShock SPX18.5 in barrel · 7 rd1 in stockfrom $929.913990 AfterShock firearms in stockShop all

All 990 AfterShock firearms

3 in stock. Sold out listings stay up, after the ones you can buy today.

1 - 3 of 3 results
Model990 AfterShock 3990 AfterShock SPX 3
ColorBlack / blued 2
Sort byMost popularPrice: low to highPrice: high to lowClear filters

Compare 990 AfterShock models

The most listed size for each model in stock.

As of Nov 13, 2026
ModelStock / finishBarrelCapacityGaugesIn stockFromShop
990 AfterShockBlued14.75 in512 Gauge2$836.24Shop
990 AfterShock SPXBlued18.5 in712 Gauge1$929.91Shop

Source: barrel, capacity and gauge are taken from our in-stock listings for each model.

AfterShock models

Mossberg says the 990 AfterShock holds 5 shells in the tube plus 1 in the chamber with 2.75 inch shells. Our AfterShock and AfterShock SPX listings show 14.75 and 18.5 inch barrels. In stock now: AfterShock (2), AfterShock SPX (1).

It ships to your FFL dealer like other guns. Some states and cities restrict short, stockless firearms, so check your state's laws and our state restrictions page before you order. For a pump with no stock, see the 590 Shockwave.

Buying a gun online

Grips, lights 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.

1Pick your 990 AfterShockAdd it to your cart like anything else.
2Choose your dealerPick a licensed dealer (FFL) near you at checkout. We ship the gun to them.
3Pick it upFill out the transfer paperwork at the dealer and take it home.

More Mossberg lines

Back to the Mossberg store
Mossberg Shockwave590 Shockwave & Nightstick14 inch pump firearms with a bird's head grip15 in stockfrom $458.08Mossberg 940940 Pro & JM ProGas operated semi-auto 12 gauge12 in stockfrom $762.25

Mossberg 990 AfterShock FAQ

Is the 990 AfterShock a pump or a semi-auto?

A semi-auto. For Mossberg's pump with no shoulder stock, see the 590 Shockwave.

What barrel lengths does the 990 AfterShock come in?

Mossberg lists 14.75 and 18.5 inch barrels, and our listings show both.

Do you have the Mossberg 990 AfterShock in stock?

In stock as of Nov 13, 2026: 3. Stock changes daily, and listings that sell out stay on this page after the ones you can buy today.

Do you ship Mossberg AfterShocks 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. Grips, lights and most parts ship to your door where your state allows.