FAB Defense GL-Core Buttstock AR-15/M4 Black Polymer

The FAB Defense GL-Core is a lightweight, skeleton-style replacement buttstock engineered for AR-15 and M4 pattern rifles. Its integrated cheek weld and ergonomic rubber butt pad deliver a stable, repeatable shooting position while shedding weight off the rear of the carbine.

Molded from durable fiberglass-reinforced polymer in a matte black finish, the GL-Core uses an interchanging tube adapter that allows it to mount on both Mil-Spec and commercial buffer tubes without modification. A non-slip traction-pattern rubber butt pad helps absorb felt recoil for more comfortable shooting.

Designed as a drop-in upgrade, the GL-Core installs in seconds on any standard AR-15/M4 receiver extension and includes an integrated swivel stud for sling attachment. Buffer tube is not included.