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New Mossberg 990 Aftershock Models Are Here — Available Now at GrabAGun

Mossberg just made a big move. They’ve taken their iconic 590 Shockwave and turned it into a semi-automatic powerhouse. Meet the Mossberg 990 Aftershock—a compact, gas-operated firearm built for speed, control, and home defense.

Even better, it’s available now at GrabAGun in three ready-to-run models. Whether you’re upgrading your gear or choosing your first defensive shotgun, the Aftershock delivers in a big way.


Mossberg 990 Aftershock

⚙️ Why the 990 Aftershock Stands Out

The 990 Aftershock gives you all the benefits of a Shockwave—but with faster shooting, less recoil, and no need to pump between shots. This means quicker follow-ups, more control, and better results when it matters most.

990 Aftershock

Let’s break down the highlights:

  • Semi-Auto, Gas-Operated Action
    This system softens recoil and cycles smoothly. As a result, your shooting is faster and more comfortable.
  • Upgraded Forend with M-LOK® Mounting
    Want to add a light or laser? The forend includes a built-in M-LOK® adapter, making it easy to customize.
  • Top-Side Safety and Paddle Bolt Release
    These large controls are easy to find and operate, even under pressure.
  • Padded Grip and Forend Strap
    A rubber-padded grip and secure strap help keep your hold steady. This is especially helpful during rapid fire.
  • Three Models for Any Setup
    Each one offers something different. Whether you want a laser, a fiber-optic sight, or just compact size, there’s a model for you.

Mossberg 990

📦 Which Model Fits You Best?

All three models are built on the same powerful platform. However, each one includes unique features:

ModelBarrel LengthSight SystemSpecial Feature
8300114.75″Fiber-OpticCompact, Fiber Optic Sight
8300218.5″Fiber-OpticLonger Barrel, improved visibility
8300314.75″Fiber-Optic/Laser Sight Crimson Trace® Lasersaddle

All three include:

  • 12 Gauge chamber (3-inch)
  • 5+1 round capacity (with 2.75″ shells)
  • Matte blue finish
  • Raptor bird’s head grip

Mossberg Aftershock

🛡️ Perfect for Home Defense

The 990 Aftershock isn’t just fun to shoot. It’s also one of the best tools for home defense. Its compact size allows you to move through tight hallways. Its semi-auto action means no wasted time between shots. Plus, its improved grip and sights help you stay accurate under pressure.

Because it’s gas-operated, even heavy loads are easier to handle. This makes the 990 Aftershock a smart choice for both new and experienced shooters.


990 Aftershock

🔍 Specs at a Glance

FeatureDetails
Gauge12 Gauge, 3″ Chamber
ActionSemi-Automatic (Gas-Operated)
Capacity5+1 with 2.75″ shells
Barrel14.75″ or 18.5″ Cylinder Bore
FinishMatte Blue
SightsBead, Fiber Optic, or Laser
ForendM-LOK® Rail
GripBlack Synthetic, Padded Palm

990 Aftershock Semi-auto

Why Choose the 990 Aftershock?

  • Easy to shoot and fast to fire
  • Compact enough for home or vehicle carry
  • Reduces recoil, boosts control
  • Built to accept accessories
  • Trusted Mossberg reliability

Whether you’re new to defensive firearms or upgrading from the 590, the Aftershock gives you everything you need—and more.


🔗 Buy the Mossberg 990 Aftershock Now at GrabAGun

All three 990 Aftershock models are in stock now at GrabAGun. Don’t wait—get the model that fits your setup and be ready for anything.

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