# Mossberg 990 Aftershock 12 Gauge 18.5in Black

**Brand:** Mossberg
**Category:** Semi-Automatic Shotguns
**Caliber:** 12 Gauge

## Specifications

- **Caliber:** 12 Gauge
- **Barrel Length:** 18.5"
- **UPC:** 015813830027
- **SKU:** UCHGDDad

## Description

The Mossberg 990 Aftershock in this configuration is a semi-automatic 12 Gauge shotgun with an 18.5-inch barrel and a 5+1 round capacity. It has a matte blued barrel, black synthetic grip, and an M-LOK strapped forend. The 3-inch chamber accepts standard 12 Gauge shells.

### Key Specifications
- **Brand**: Mossberg
- **Model**: 990 Aftershock
- **Caliber**: 12 Gauge
- **Action**: Semi Auto
- **Capacity**: 5+1
- **Barrel Length**: 18.5 inches
- **Color/Finish**: Matte Blued / Black

### Detailed Features
- 18.5-inch matte blued barrel
- M-LOK compatible forend with strap
- Black synthetic Aftershock grip
- 3-inch chamber
- Matte blued receiver

## Frequently Asked Questions

**Q: What caliber is the 990 Aftershock?**

A: The 990 Aftershock is chambered in 12 Gauge with a 3-inch chamber.

**Q: Who makes the 990 Aftershock?**

A: The 990 Aftershock is made by Mossberg.

**Q: What type of firearm is the 990 Aftershock?**

A: It is a semi-automatic shotgun with an 18.5-inch barrel and black synthetic Aftershock grip.

**Q: How many rounds does the 990 Aftershock hold?**

A: It has a 5+1 round capacity.

**Q: What is the barrel length of the 990 Aftershock?**

A: This configuration has an 18.5-inch matte blued barrel.

**Q: Does the 990 Aftershock have an M-LOK forend?**

A: Yes, it has an M-LOK compatible forend with a strap.

**Q: Where can I buy the 990 Aftershock?**

A: Compare current vendor offers on this page.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> This really helps control. Love the controls on this gun.
>
> — [USCCA](https://www.youtube.com/watch?v=IM4JFXo6HGo&t=19s)

> The barrel sticks up above and so if you're manipulating you can burn your hand.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=wqoHW-sNqIs&t=231s)

> It doesn't really care for bird shot that much.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=wqoHW-sNqIs&t=416s)

> Good crisp brake. And there is a reset. It's pretty light, but it is tactile and audible.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=wqoHW-sNqIs&t=713s)

> It isn't as snag-free as the 940 ProTactical SPX.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=wqoHW-sNqIs&t=493s)

## What Customers Say

*AI-generated insights from customer reviews*

The 990 Aftershock at 18.5 inches lands in a more conventional shotgun length than the short-barrel variant, and owners often prefer this version for versatility. The semi-auto action and M-LOK forend are the two features most mentioned in positive terms.

Cycling reliability is the most debated aspect of the 990 Aftershock platform overall. Many owners report clean cycling across a range of loads; a consistent minority note sensitivity to lighter target loads and recommend running heavier shells. The matte blued finish holds up reasonably well in field use but shows wear earlier than parkerized or cerakoted alternatives.

The Aftershock grip configuration is polarizing. Shooters who want it appreciate the compact, pistol-grip handling; those who prefer a traditional stock find it less comfortable over extended sessions. Value is considered acceptable given the feature set, though the semi-auto premium over a pump is always part of the conversation.

## Pricing

**15 offers available**

| Vendor | Price |
|--------|-------|
| Impactguns Com | $799.99 |
| Grabagun Com | $819.99 |
| Gritrsports Com | $840.99 |
| Shootingsurplus Com | $841.81 |
| Kygunco Com | $853.14 |
| Guns Com | $853.99 |
| Buds Gun Shop | $860.99 |
| Centerfiresystems Com | $879.99 |
| Globalordnance Com | $895.41 |
| Brownells | $899.99 |

*...and 5 more offers*

## Similar Products

- [Mossberg 990 Aftershock SPX 12 Gauge 18.5in Matte Black](https://gunsnation.com/p/mossberg-990-aftershock-spx-12-gauge-18-5in-matte-black/UCHGDDcL)
- [Mossberg 990 Aftershock 12 Gauge 14.75in Black](https://gunsnation.com/p/mossberg-990-aftershock-12-gauge-14-75in-black/UCHGDDak)
- [Mossberg 990 Aftershock 12 Gauge 14.75in Black](https://gunsnation.com/p/mossberg-990-aftershock-12-gauge-14-75in-black/UCHGDDaM)
- [Mossberg 990 Aftershock SPX 12 Gauge 14.375in Black](https://gunsnation.com/p/mossberg-990-aftershock-spx-12-gauge-14-375in-black/UCHGDDbq)
- [Mossberg 990 Aftershock SPX 12 Gauge 14.375in OD Green](https://gunsnation.com/p/mossberg-990-aftershock-spx-12-gauge-14-375in-od-green/UCHGDDcE)
- [Mossberg 990 Aftershock SPX 12 Gauge 14.375in Flat Dark Earth](https://gunsnation.com/p/mossberg-990-aftershock-spx-12-gauge-14-375in-flat-dark-earth/UCHGDDc7)

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*Data from [GunsNation](https://gunsnation.com)*