The GL-Core IMPACT represents a new generation of Fab Defense’s patented shock absorbing buttstocks. Its 3-setting adjustable mechanism lets you dial in the level of recoil reduction to match your specific needs and caliber, 56 or close quarters buckshot.
Built for durability and reliability, the GL-Core IMPACT mounts on any Mil-Spec or Commercial carbine tube. The patented recoil reduction mechanism features three variable settings and minimizes felt recoil by up to 50%, delivering improved accuracy and reduced shooter fatigue across multiple platforms and calibers.
The buttstock includes an ergonomically shaped rubberized butt-pad, interchangeable buffer tube adaptors for both Mil-Spec and Commercial tubes, and an inverted positioning lever designed not to open accidentally. Installation and adjustment are straightforward. Upgrade to the Fab Defense GL-Core IMPACT Buttstock and experience the difference shock absorption and recoil management make in your shooting performance.






