Description
The Midwest Industries stock takes the classic Mossberg 590 profile and drops in a modern build that holds up to real-world use. The grip and stock beam are machined from hard coat anodized 6061 aluminum, so you get a tough, corrosion-resistant backbone paired with a polymer cheekpiece and MI-designed grip panels that give you plenty of texture and a secure hold. At roughly 1.68 pounds, it carries comparable weight to the wood stock it replaces, so the balance of your shotgun stays familiar even after the swap.
One of the things that makes this stock worth the upgrade is the adjustable cheekpiece. You can raise or lower it to line up your eye behind whatever you're running, whether that's the factory bead, iron sights, a red dot, or a magnified optic. Drop it into the lowest position and it sits at the same height as the original wood stock, which is a nice touch if you like the feel of the factory setup but want more flexibility down the road.
What Sets the MI-SG-590 Stock Apart
Comfort and control were clearly the priorities here. The exclusive Midwest Industries butt pad cuts down on felt recoil while keeping a firm grip in your shoulder, which pays off during longer range sessions or with heavier defensive loads. The ambidextrous design means lefties and righties both get a natural feel, and the grip texture holds up when conditions turn wet or cold.
Sling and Accessory Options on the Mossberg 590 Stock
Mounting is where this stock really opens things up. It includes several anti-rotation QD swivel sockets plus a standard sling swivel location and stud, so you can set your sling up exactly how you carry. There are also M-LOK slots on both sides, ready for MI Universal Shell Holders to keep spare rounds on board or M-LOK panels if you just want to clean up the look. It maintains factory length of pull out of the box, and optional spacer plates are available if you want to stretch it out for a longer reach.
Key Specifications
- Manufacturer: Midwest Industries
- Manufacturer Part Number: MI-SG-590
- UPC: 812102035114
- Model: 590
- Fits: Mossberg 590
- Gauge: 12 Gauge
- Color: Black
- Material: Hard Coat Anodized 6061 Aluminum with Polymer Cheekpiece and Grip Panels
- Finish: Anodized
- Weight: 1.68 lbs
- Hand Orientation: Ambidextrous
- Cheekpiece: Adjustable Polymer
- Length of Pull: Factory length, adjustable via optional spacers
- Mounting: Anti-rotation QD sockets, standard sling swivel stud, M-LOK slots both sides
What’s Included
- Midwest Industries Shotgun Stock for Mossberg 590 (Black)
Frequently Asked Questions
What shotgun does the MI-SG-590 stock fit?
This stock is designed specifically for the Mossberg 590. It's a direct fit that maintains factory length of pull and factory height when the cheekpiece is set to its lowest position, so it drops in as a modern replacement for the wood stock.
Can I adjust the cheekpiece for optics on the Mossberg 590 stock?
Yes. The polymer cheekpiece raises and lowers so you can line up your eye behind iron sights, a red dot, or a magnified optic. That flexibility lets you set a consistent, comfortable cheek weld no matter what sighting system you run.
Does this Midwest Industries stock accept sling mounts and shell holders?
It comes with several anti-rotation QD swivel sockets plus a standard sling swivel location and stud, giving you plenty of sling options. The M-LOK slots on both sides also let you add MI Universal Shell Holders for spare rounds or M-LOK panels for looks.
How does the recoil feel compared to the factory stock?
The exclusive Midwest Industries butt pad is built to reduce felt recoil while keeping a secure fit in your shoulder. Users running heavier defensive loads report it stays comfortable over long sessions, and it holds a firm shoulder position through repeated shots.





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