FAB Defense FX-M4 10/22 M4 Collapsible Stock Conversion Kit - Left-Side Folding, Polymer, Black

The FAB Defense FX-M4 10/22 M4 Collapsible Stock Conversion Kit is a tactical furniture upgrade designed to transform a standard Ruger 10/22 rimfire rifle into an M4-style carbine configuration. Built from durable polymer and finished in matte black, this kit replaces the factory 10/22 stock with a true M4-pattern buttstock platform, bringing modern tactical handling and modularity to the classic .22 LR platform.

The buttstock is fully collapsible, offering an adjustable length of pull from 13.11" to 15.94" so shooters of different sizes and over different layers of clothing can dial in a comfortable, consistent cheek weld. It also folds to the left side of the receiver, dramatically shortening the overall footprint of the rifle for transport and storage. Fully extended, the rifle reaches a 30.70" overall length.

An integrated 1913 MIL-STD Picatinny side rail is molded into the stock, providing a ready mounting surface for a monopod, sling mount, or other accessory on the non-firing side. The all-polymer construction keeps weight to a minimum and resists weather, while the matte black finish blends cleanly with the rest of the rifle.

Designed specifically to fit the Ruger 10/22, this conversion is a popular choice for shooters who want the look, feel, and adjustability of an M4-pattern chassis on their favorite plinking and training rimfire. Installation uses the rifle's existing action and barrel components; this is a stock conversion kit only and does not include a rifle, optic, magazine, or other accessories.