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