Description
The factory stock on a Remington 870 is fine until you try to make it fit you, or run a red dot, or shoulder it in a heavy jacket. The Magpul SGA Stock solves that. It's an ambidextrous, user-configurable buttstock built from reinforced polymer that drops right in and lets you tune the gun around how you actually shoot instead of the other way around.
The headline feature is the spacer system. Using the included 0.5-inch spacers, you can set length of pull anywhere from roughly 12.3 to 14.3 inches, so whether you've got long arms, short arms, or you're layering up in cold weather, you can find the sweet spot. That range also makes it a solid pick for a household gun that gets passed between family members of different sizes. Up top, the optional cheek risers raise the comb height to line your eye up behind a mounted optic or raised sights, which is something the stock wood or polymer stock simply can't do.
What the SGA Stock Does for Your 870 Handling
Beyond adjustability, the SGA brings real ergonomic upgrades. There's a textured, angled pistol grip area with side panels for a positive grip in the wet, the cold, or with gloves on, plus a recoil-reducing butt pad that takes some of the sting out of heavy 12 gauge loads. Integral ambidextrous sling loops are recessed into the sides so nothing snags. It weighs about 1.5 pounds with two spacers installed.
Installing the Magpul SGA on a Remington 870
This is a true drop-in job with no gunsmithing. You pull the factory stock bolt, slide the SGA on, and torque the bolt back down. Most folks have it done in well under fifteen minutes with basic tools. It's made in the USA and fits 12 gauge Remington 870 variants, giving a decades-old scattergun a serious functional refresh without touching the parts that make the 870 great in the first place.
Key Specifications
- Manufacturer: Magpul Industries
- Manufacturer Part Number: MAG460-GRY
- UPC: 873750011967
- Model: Remington 870
- Caliber/Gauge: 12 Gauge
- Color/Finish: Stealth Gray
- Material: Reinforced Polymer
- Adjustment Type: Length of Pull via Spacer System
- Length of Pull Range: 12.3 in. to 14.3 in.
- Weight: 1.5 lbs (with two spacers installed)
- Butt-Pad Dimensions: 1.5 x 5.0 in.
- Max Butt Width: 1.5 in.
- Sling Mounting: Integral ambidextrous recessed sling loops
- Country of Origin: Made in USA
What’s Included
- Magpul SGA Stock
- Removable recoil-reducing butt pad
- Length of pull spacers
- Cheek risers
Frequently Asked Questions
Will the Magpul SGA Stock fit my Remington 870?
It's designed for 12 gauge Remington 870 shotguns and works across the common variants like the Express and Express Tactical. It is not compatible with the Remington 870 Super Magnum, so double check your model if you're running one of those. This gray version is for the 870 only and won't fit other platforms like the Mossberg 500 or a Winchester SXP.
How hard is the SGA Stock to install?
It's a true drop-in swap with no gunsmithing required. You remove the factory stock bolt, slide the SGA on, and torque the bolt back down, which most people knock out in under fifteen minutes with basic tools. A common tip is to snug the bolt down properly so the stock doesn't feel loose over time.
Can I use the SGA Stock with a red dot or optic on my 870?
Yes, and that's one of the main reasons people buy it. The included cheek risers raise the comb height so your eye lines up behind a receiver-mounted optic or raised sights, which the factory stock can't do. That higher, more consistent cheek weld makes a real difference in how repeatable your sight picture is.
How much can I adjust the length of pull on the Magpul SGA?
The included spacers let you set length of pull from roughly 12.3 to 14.3 inches in half-inch increments. That lets you tune the fit for your arm length, for shooting in heavy clothing or gear, or for sharing the gun between different sized shooters in the house.




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