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Magpul Shotgun Stock – SGA for Remington 870 & Mossberg 500/590


Magpul Shotgun Stock – SGA for Remington 870 & Mossberg 500/590

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Magpul Shotgun Stock – SGA Upgrades for Remington 870 & Mossberg 500

Looking for a durable, adjustable, and modular shotgun stock that upgrades performance without sacrificing reliability? The Magpul SGA Stock delivers just that — a drop-in upgrade for your Remington 870 or Mossberg 500/590 built for tactical users, home defense, hunters, and recreational shooters alike.

Designed to improve ergonomics, recoil control, and sling compatibility, the SGA is a go-to solution trusted by professionals and DIY builders nationwide.


🔧 Why Choose the Magpul SGA Stock?

Fits Right Out of the Box
Compatible with both Remington 870 and Mossberg 500/590 models. No gunsmithing required.

Fully Adjustable LOP
Tailor your length of pull (LOP) from 12.5" to 14.5" using included spacers for optimal shoulder fit.

Recoil-Reducing Design
The internal geometry and enhanced grip profile help manage recoil and improve shot follow-through.

Ambidextrous QD Sling Mounts
Supports multiple sling configurations for tactical carry or field use.

Drop-In Simplicity
Installs with basic tools in minutes and fits factory receivers with a rock-solid lockup.

Customizable Cheek Risers
Optional cheek risers help align your eye perfectly with optics or ghost ring sights.


🔍 Which Models Does It Fit?

  • Remington 870: All standard 12-gauge variants
  • Mossberg 500/590/590A1: Compatible with 12-gauge shotguns only

Not for use with .20 gauge or other non-standard frames. Always confirm model compatibility before ordering.


🛠️ Optional Accessories

Pair your SGA stock with other Magpul accessories for a full upgrade:

  • Magpul M-LOK Forends: Add a flashlight or grip for better control
  • SGA Receiver Sling Mounts: Available for both Remington and Mossberg models
  • Cheek Riser Kits: Low and high-profile versions available for optics use

🛒 Why Buy from Mounts Plus?

  • Authorized Magpul dealer — all parts are genuine and backed by the manufacturer

  • ✔ Expert customer support from real shooters

  • ✔ Fast shipping and secure checkout

  • ✔ Trusted by the firearms community since 1994


📦 What’s in the Box?

  • 1x Magpul SGA Stock (choose Remington or Mossberg version)
  • 4x LOP spacers
  • Mounting hardware
  • Installation instructions

Upgrade your pump-action shotgun today with the Magpul SGA Stock — and turn a classic into a modern, mission-ready tool.