Description
This is Ruger's genuine factory low-comb module, and it does one job really well: it puts your cheek right where it needs to be for shooting with iron sights. The 1.26 inch comb height keeps your eye down low and in line with the front and rear sights, so you get a repeatable sight picture every time you shoulder the rifle. Pair that with the full 13.75 inch length of pull and you've got a stock that fits an adult frame properly instead of feeling cramped.
Where this really earns its keep is on the Compact models. A 10/22 Compact or an American Rimfire Compact ships with a shorter 12.5 inch pull built for smaller shooters, and swapping in this module stretches the reach out to standard adult length. That makes it a smart pickup for a rifle that started as a youth gun and needs to grow up, or for anyone who just wants more room between the trigger and the buttpad.
How the Ruger Low Comb Module Fits Your Rifle
It works with any Ruger rifle built around the Modular Stock System, which covers selected 10/22 and American Rimfire models. The whole design is meant to be user-swappable. You loosen the rear sling swivel stud, pull the old module off, and slide this one into place. Most folks have it done in a couple of minutes, and you don't need a gunsmith or any special tools beyond a screwdriver.
Why Pick the Low Comb Over the High Comb
Comb height is the deciding factor here. If you're running the factory iron sights, the low comb is the one you want, since it drops your eye level to match the sights. If you plan to mount a scope, that's when the taller high-comb module makes more sense, because it lifts your cheek up behind the optic. For iron-sight shooting, straight out to the range or the squirrel woods, this low comb is the right call. It's molded from durable black composite to match the factory stock and hold up to real use.
Key Specifications
- Manufacturer: Ruger / Sturm, Ruger & Co.
- Manufacturer Part Number: 90431
- UPC: 736676904310
- Product Type: Cheek Piece / Stock Comb Module
- Style: Low Comb with Standard LOP
- Comb Height: 1.26 in
- Length of Pull: 13.75 in
- Intended Use: Standard iron sights
- Fit: Ruger rifles with the Modular Stock System, including select 10/22 and American Rimfire
- Material: Composite / synthetic
- Color: Black
- Shipping Weight: 0.59 lb
- Units per Box: 1
What’s Included
- 1 Ruger low comb stock module (13.75 in length of pull)
Frequently Asked Questions
Which Ruger rifles does this low comb module fit?
It fits any Ruger rifle built around the Modular Stock System, which includes selected 10/22 and American Rimfire models. The stocks themselves are the same across standard and compact versions, so the module is what changes the fit. If your rifle uses the swappable comb setup with a rear sling swivel stud, this one drops right in.
Should I get the low comb or the high comb module?
Go with this low comb module if you're shooting with the factory iron sights, since the 1.26 inch height drops your eye down in line with them. If you're running a scope or mounted optic, the taller high comb module is the better fit because it raises your cheek behind the glass. Comb height is really the whole difference between the two.
How hard is it to install the Ruger stock module?
It's about as easy as gun work gets. You loosen the rear sling swivel stud, pull off the existing module, and slide this one into place, then snug the stud back down. Most people have the whole swap done in a couple of minutes with just a screwdriver, no gunsmith required.
Will this module give my Compact 10/22 or American Rimfire more length of pull?
Yes. Compact models usually ship with a 12.5 inch length of pull sized for smaller shooters, and this module bumps that up to a full 13.75 inches. It's a popular way to grow a youth rifle into an adult-friendly fit without buying a whole new stock.






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