Fab Defense USIQ M4 Ruger 10/22 M4 Collapsible Stock Kit - Black (FX-M4R1022B)

Transform your Ruger 10/22 into a modern sporting rifle with the Fab Defense USIQ M4 Ruger 10/22 M4 Collapsible Stock Kit. This conversion system lets you swap the factory stock for a genuine AR-style platform, keeping your favorite rimfire relevant and fun to shoot. The kit works with both standard and bull-barrel 10/22s, making it one of the most straightforward ways to add adjustability and tactical modularity to a gun that's already a perfect training and small-game platform.

The centerpiece is the GL-CORE folding stock—adjust length of pull to fit your frame or kit up for different shooting positions, and fold it away when space matters. Picatinny rails across the platform mean you can mount optics, lights, or whatever your mission calls for. The included finger-groove pistol grip gives you a proper shooting grip instead of that ring-style furniture, and it makes the whole experience more like running a modern carbine. This is the upgrade path for 10/22 owners who've outgrown the basic profile and want their little .22 to handle like something from this century.

Fab Defense chassis conversions are popular in the precision rimfire community and among shooters who want to maximize training reps on a low-recoil, high-accuracy platform. If you shoot competitions, hunt small game, or just love the 10/22 and want to modernize it without buying a new gun, this kit delivers real usability and holds up to regular use.

Key Features

• Adjustable and folding GL-CORE stock for customizable length of pull and compact storage
• Picatinny accessory rails for mounting scopes, red dots, lights, or other tactical gear
• Finger-groove pistol grip for improved control and ergonomics
• Compatible with both standard and bull-barrel Ruger 10/22 receivers
• Black finish

Specifications

Frequently Asked Questions

Will this kit fit both standard and bull-barrel 10/22 receivers?

Yes. The Fab Defense USIQ M4 kit is engineered to work with standard Ruger 10/22 barrels and bull-barrel variants, so it adapts to whichever 10/22 you own.

Is the stock adjustable for length of pull?

Yes. The GL-CORE stock is collapsible and adjustable, so you can tailor it to your preferred cheek weld and shoulder pocket position. It also folds for transport or storage.

What accessories can I mount on this kit?

The system includes Picatinny rails, which accept standard mil-spec rail-mounted optics, lights, lasers, and other tactical accessories. This gives you the flexibility to set up your 10/22 for hunting, competition, or training without modification.

What's included in the kit?

The kit includes the chassis platform with the adjustable folding GL-CORE stock, the finger-groove pistol grip, and Picatinny rails. Check the product page or contact us for a detailed parts list and any tools or fasteners included.