This is a firearm — here's how it works
- Order online. Pay in full; we ship it from our warehouse into the shop.
- We receive it. The firearm ships to us (or your chosen FFL) — never to your door.
- DROS & the 10-day wait. California background check and the mandatory 10-day waiting period begin at the counter.
- Pick up & transfer. Bring valid ID and required documents; we complete the compliant transfer.
Description
The 990 AfterShock Small Size, Big Tactical Performance. Ultra-compact and easy to maneuver, it delivers 5+1 semi-auto convenience paired with a host of functional tactical features. Inside, the 990's durable gas system and a host of corrosion-resistant internal parts/finishing (nickel boron-coated gas piston, magazine tube, hammer and sear), plus an enlarged/beveled loading port, elongated elevator, and anodized follower combine for smooth operation Outside, there's the ergonomically-designed AtterShock grip with rubberized palm pad, a streamlined forend with Mossberg signature texturing, and an embossed strap fora solid hold; plus a magazine tube extension with M-LOK mounting slots on the sides and bottom for easy accessory flexibility.
Specifications
| Action | Semi-Auto |
|---|---|
| Caliber / Gauge | 12 Gauge |
| Capacity | 5 |
| Barrel length | 18.5" |
| Firearm type | Shotgun |
| Model | 990 |
| Overall length | 30.875'' |
| Color | Black |
| Safety | Ambidextrous |
| Sights | Fiber Optic |
| Barrel finish | Matte Blued |
| Chokes included | Cylinder Bore |
| Magazine included | 1 x 5-Round |
| Sight type | Fixed Sights |
California compliance
Every firearm sale runs through the standard California process: an in-person DROS background check, the mandatory 10-day waiting period, a valid Firearm Safety Certificate (FSC), and proof of California residency. The 11% AB 28 firearms excise tax is collected at checkout and shown as a separate, non-taxable line.
MSBRG 990 AFTERSHOCK 12/18.5 5RD BK
In stock at our warehouse — ready to ship
It's not in our Napa cases today, but it's in stock at our warehouse and ready to ship. You complete the purchase and pick it up at the counter, same as anything else — we text you when it lands.
This is a firearm: it transfers through a licensed dealer and never ships to your door. You'll choose our Napa counter or your own dealer at checkout.
