The Fab Defense FXM4R1022B M4 Conversion Kit Chassis gives the Ruger 10/22 a modern, M4-style makeover with a side-folding, collapsible GL-CORE stock, ergonomic pistol grip, and integrated Picatinny accessory rails. Built from durable, lightweight fiberglass-reinforced polymer, this chassis is a true drop-in upgrade that requires no gunsmithing and is compatible with both standard and bull-barrel 10/22 rifles.

Designed for shooters who want improved ergonomics and modularity, the FXM4R1022B offers five length-of-pull positions, ambidextrous QD sling sockets, and a finger-groove grip that helps reduce wrist fatigue during extended range sessions. Whether you are setting up a dedicated plinker, small-game rig, or training rifle, this conversion kit lets you tailor your 10/22 with optics, lights, and other accessories while maintaining Fab Defense’s reputation for thoughtful design and solid construction.

Key Features:

• Manufacturer: FAB Defense
• Model: FXM4R1022B M4 Conversion Kit Chassis
• Color: Black
• Material: Fiberglass-Reinforced Polymer
• Stock Type: Side-Folding, Collapsible GL-CORE
• Length Adjustments: 5 Positions
• Rails: 1913 Mil-Std Picatinny Side And Lower Rails
• Grip: Pistol Grip With Finger Grooves
• Compatibility: Ruger 10/22 Standard And Bull Barrels
• Weight: 37.5 Oz