GL-CORE - AR15/M4 Buttstock for Mil-Spec and Commercial Tubes


Government Export Restriction

This item may be regulated for export by the U.S. Departament of State or U.S. Departament of Commerce. Please see our Export Policy prior to placing your order.

Government Restriction

By adding to cart, I understand and agree to the Domestic Restricted Product Policy and certify that I will comply with applicable federal, state and local laws and regulations.

The GL-CORE is our newest addition to our line of buttstocks.

The integrated cheek weld, ergonomic buttpad and an interchanging tube adapter, provide an unmatched fit on Mil-Spec and Commercial buffer tubes, with a high level of efficiency and comfort.

Disclaimer: Cheek Raiser Model will not fit AR 15 rifles.


  • Ergonomically shaped rubberized butt-pad for quick shouldering and easy maneuvering of the weapon
  • Interchangeable buffer tube adapters for a tight fit on Mil-Spec and Commercial buffer tubes
  • Integrated cheek weld in an overall compact and sleek design
  • No protruding parts, will not get caught on gear or webbing
  • Inversed positioning lever will not open accidently
  • Two integrated quick detach rear sling swivel connectors
  • Made of durable and light-weight fiberglass reinforced polymer composite
  • Available in Matte Black, Olive Drab Green or Flat Dark Earth
SKU: fx-glcore


5 out of 5 (based on 5 ratings)
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Great Gear : )

I own many of F.A.B.'s Buttstocks, and pistol grips. So, I'm very happy with them. Hi quality, fast shipping. I'm Happy : )
Posted by Tom, 08/08/23


Stock was ok. But broke mil-spec inserts getting them out. Seems like a poor design.
Posted by Darrell Connelly, 04/05/23

Vote stock

This stock is very nice, fits nicely and doesn't rattle around like my magpul stocks, and looks great, has a nicer recoil pad also, I liked it so much I ordered 2 more,fab defense has great products.!
Posted by Chris, 02/20/23

gl-core buttstock

i love it. it fits on my pof revolution.
Posted by Jorge P., 10/31/22

GL-CORE AR/M4 Skeleleton Style Buttsstock

Love the look and feel of his buttstock!!! Different design than your traditional buttstocks. Compatible with my Vltor A5 Mi-Spec buffer tube. Great Product!!!
Posted by Johnny, 08/27/22