New Mossberg 990 SPX Magpul (2026): Specs, Features, and Tactical Shotgun Overview [Video]

April 27, 2026 Products, Videos

The Mossberg 990 SPX Magpul builds on Mossberg’s proven semi-auto shotgun platform with a tactical-focused upgrade package designed for modern shooters.

Introduced at SHOT Show 2026, this updated version combines Magpul furniture, M-LOK compatibility, and optics-ready capability with Mossberg’s 990 action system—creating a versatile shotgun suited for defensive, duty, and range use.

For buyers considering a tactical shotgun upgrade, the 990 SPX Magpul offers a blend of ergonomics, modularity, and performance-focused features.

What Is the Mossberg 990 SPX Magpul?

The Mossberg 990 SPX Magpul is a semi-automatic tactical shotgun featuring Magpul furniture, an M-LOK compatible forend, and optics-ready capability. It is designed for enhanced ergonomics, modular accessory mounting, and improved handling.

Key Features of the Mossberg 990 SPX Magpul

Magpul SGA Stock:
Adjustable length of pull using spacers for a customized fit
SPX Forend with M-LOK:
- M-LOK slots at 3, 6, and 9 o’clock
- Integrated heat shield design
- Supports lights and accessories
QD Sling Mounts:
Ambidextrous QD cups positioned to avoid interference with accessories
Oversized Controls:
- Enlarged bolt handle
- Oversized safety
- Enlarged bolt release
  Designed for faster manipulation
Optics Ready (RMSC Footprint):
Compatible with micro red dot optics
Fiber Optic Front Sight:
Protected front sight for improved visibility

Mossberg 990 SPX Magpul Specs (Typical Configuration)

Gauge: 12 Gauge
Action: Semi-automatic
Barrel Length:
- Standard models: ~18.5″
- NFA variant shown: 14″ (Form 1 required)
Stock: Magpul SGA adjustable
Forend: SPX with M-LOK
Sights: Fiber optic front + optics-ready cut
Mounting: QD sling cups
Controls: Oversized tactical controls

What’s New for 2026

Magpul Furniture Integration

The addition of the Magpul SGA stock significantly improves ergonomics with:

Adjustable length of pull
Improved control in tactical setups

Enhanced Forend Design

The SPX forend:

Adds M-LOK compatibility
Functions as a heat shield
Improves grip and control

Optics-Ready Platform

The RMSC footprint allows shooters to:

Mount red dot optics
Modernize the shotgun platform

Why the 990 SPX Magpul Stands Out

This shotgun focuses on modern tactical usability:

Key Advantages:

Customizable ergonomics
Accessory-ready platform
Improved handling under stress
Compatibility with modern optics

It’s designed for shooters who want more than a traditional shotgun.

Mossberg 990 SPX Magpul vs 940 Tactical

Feature	990 SPX Magpul	940 Tactical
Stock	Magpul SGA (adjustable)	Standard tactical stock
Forend	M-LOK SPX	Standard forend
Optics Ready	Yes (RMSC)	Yes (model dependent)
Controls	Oversized	Oversized
Best For	Modularity & ergonomics	Proven baseline performance

Who the Mossberg 990 SPX Magpul Is For

This shotgun is ideal for:

Tactical shotgun users
Home defense setups
Range shooters wanting modern features
Users upgrading from older shotgun platforms

Final Thoughts

The Mossberg 990 SPX Magpul introduced for 2026 brings modern upgrades to a proven platform, combining ergonomics, modularity, and optics compatibility in a single package.

For buyers looking for a tactical shotgun that can be customized and adapted, this model stands out as a strong option in the current market.