FAB Defense GL-Core S CP Adjustable Cheekrest Buttstock for AR-Platform, Matte Black Synthetic

The FAB Defense GL-Core S CP adjustable cheekrest buttstock brings Israeli Counter-Terrorism design to your AR platform rifle. Built compact for CQB work but rigid enough for mid-range shooting, this collapsible stock pairs a slim, non-slip buttpad with an integrated cheek weld to anchor your cheek consistently behind the gun. The CP variant adds an adjustable cheek rest—a feature that lets you dial in proper sight picture and head position whether you're running a traditional optic, holographic sight, or iron sights. That flexibility matters when you're running multiple uppers or sharing a rifle in a squad.

Setup is straightforward. The GL-Core S comes with an interchangeable buffer tube adapter, so it'll mount directly on either Mil-Spec or Commercial buffer tubes—no guesswork, no special parts needed. Two integrated QD sling swivel sockets are built in, giving you quick-detach attachment points without adding clutter or extra hardware. The matte black synthetic construction is durable and weatherproof, so whether you're training, hunting, or working drills on the range, the stock resists rust and won't rattle loose.

If you shoot an AR setup that needs a compact, rigid stock with real cheek support—and especially if you want to tune that cheek weld to match your optic—the GL-Core S CP delivers proven design without the usual retail markup.

Key Features

• Adjustable cheek rest for proper sight alignment with variable optics and holosights
• Integrated cheek weld and slim, non-slip buttpad for consistent shoulder pocket and head position
• Compact, collapsible design for CQB and close-quarters training
• Interchangeable buffer tube adapter fits both Mil-Spec and Commercial tubes
• Two integrated QD sling swivel sockets
• Matte black synthetic construction resists weathering and abuse
• Tested and field-proven design for tactical and civilian AR builds

Specifications

Frequently Asked Questions

Will this stock fit my AR buffer tube?

Yes. The GL-Core S CP comes with an interchangeable buffer tube adapter that works on both Mil-Spec and Commercial diameter tubes, so compatibility across most AR builds is standard.

What is the adjustable cheek rest for?

The CP version's adjustable cheek rest lets you fine-tune your head position and cheek weld to match the height and reticle view of your specific optic—whether that's a traditional scope, holographic sight, or iron sights. This is especially useful if you run different uppers or sights on the same lower receiver.

Is this stock suitable for hunting or just tactical use?

The GL-Core S CP works well for both. The compact, collapsible design is effective for close-quarters scenarios, but the rigid construction and cheek support also provide the stability and control needed for mid-range engagements, making it a practical choice for hunters and sport shooters as well as tactical training.

What comes in the box?

The stock includes the GL-Core S CP buttstock with adjustable cheek rest, the interchangeable buffer tube adapter for Mil-Spec and Commercial tubes, and two integrated QD sling swivel sockets.