FAB Defense FX-AGR870FK M4 Collapsible Buttstock Remington 870 Black Polymer

The FAB Defense FX-AGR870FK is an M4-style collapsible buttstock purpose-built for the Remington 870 pump-action shotgun, giving a tactical rifle feel and adjustable fit without modifying the action or barrel. It replaces the factory buttstock with a polymer chassis that incorporates an adjustable cheek rest and a built-in storage compartment for cleaning tools, spare parts, or other small accessories.

Designed for shooters who want better control and quicker target acquisition from a pump shotgun, the FX-AGR870FK delivers a collapsible, adjustable length-of-pull design similar to an M4 carbine stock, allowing the user to set a comfortable cheek-to-bore line for use with optics or iron sights. The black polymer construction keeps weight down and stands up to field abuse, rain, and recoil, while the textured gripping surface helps keep the shotgun planted in the shoulder.

Installation is straightforward - the unit clamps onto the factory Remington 870 stock interface and is secured in place, transforming a traditional hunting shotgun into a more compact, maneuverable defensive or patrol platform. Whether you are running a duty 870, a home-defense shotgun, or a 3-Gun build, this FAB Defense buttstock brings modern ergonomics to a legendary pump action.