FAB Defense AR-15/M4 GL-CORE Buttstock - Fits Mil-Spec & Commercial Buffer Tubes
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From orders that included this itemProduct description
Compact & Sleek Buttstock For Both Mil-Spec & Commercial Buffer Tubes
The FAB Defense GL-CORE Buttstock is an upgrade for AR-15/M4 Platforms designed with integrated cheek weld and an ergonomic buttpad that provides a high level of efficiency and comfort.
It includes interchangeable adapters to fit securely on both Mil-Spec and Commercial buffer tubes and it’s designed with an inverse positioning lever so it will remain safe and secure and will not accidentally open on Mil-Spec and Commercial buffer tubes.

Made With Lightweight Fiberglass-Reinforced Polymer
The GL-CORE Stock has a compact and sleek design is made from lightweight fiberglass-reinforced polymer making it highly durable for any kind of activity and all weather conditions. It also features an ergonomically shaped rubberized butt-pad, so you’ll be able to quickly shoulder and easily maneuver your weapon in the field.
The stock also has two integrated quick-detach rear sling swivel connectors so that you can seamlessly attach a sling for a more comfortable carry.
Features:
- 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 accidentally
- Two integrated quick-detach rear sling swivel connectors
- Made of durable and light-weight fiberglass reinforced polymer composite
Specifications:
- Platform: M4, AR-15
- Hand: Ambidextrous
- Fabric/Material: Fiberglass Reinforced Polymer
- Weight: 271 gr
- Width: 52 mm
- Height: 131 mm
- Length: 180 mm
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Customer reviews 27
Now, as far as AT3 goes, I don't know who they know at the USPS, but I've never had a merchant put product on my doorstep as fast as these guys. I order one day, it ships by the next day, 3 or 4 days later it's here. This is my second purchase from AT3, and the experience has been the same both times. Great job!
AT3 Tactical · We apologize for the inconvenience you experienced with our FAB Defense AR-15/M4 GL-CORE Buttstock. We take all feedback seriously and would like to assist you with resolving this issue. Please reach out to our customer service team so we can provide you with a solution. Thank you for bringing this to our attention and we hope to make this right for you.
AT3 Tactical · Thank you for your review! We are glad to hear that you are satisfied with the FAB Defense AR-15/M4 GL-CORE Buttstock. We designed it with a cheekpad and smooth end for added comfort and functionality. Thank you for choosing our product!
AT3 Tactical · Thank you for your review of our FAB Defense AR-15/M4 GL-CORE Buttstock. We are glad to hear that it fits both Mil-Spec and Commercial Buffer Tubes. We strive to provide products that meet the needs of all our customers.
AT3 Tactical · Thank you for your review! We are thrilled to hear that you are happy with the quality and fit of our FAB Defense AR-15/M4 GL-CORE Buttstock. Our goal is to provide products that function as they should. We appreciate your feedback and hope to continue exceeding your expectations in the future.
AT3 Tactical · Thank you for leaving a review for the FAB Defense AR-15/M4 GL-CORE Buttstock. We are glad to hear that it fits both Mil-Spec and Commercial Buffer Tubes. We strive to provide products that meet the needs of all our customers.
Questions & Answers
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Warranty & returns
Fab Defense Lifetime Warranty!
Fab Defense Limited Lifetime Warranty
- FAB DEFENSE warrants to the original end-user/customer that the products specified below are free from defects in materials and workmanship.
- Subject to the provisions, conditions, and limitations set forth below, FAB DEFENSE will, at its sole discretion, either repair or replace any part of its products found and proven to be defective by reason of improper workmanship or materials or damage due to harsh service conditions.
- FAB DEFENSE will provide repair parts or replacement products on an exchange basis, and such parts shall be either new or refurbished, provided they are functionally equivalent to new parts.
- In the event that FAB DEFENSE is unable to repair or replace the defective product, it will refund the current value of the product at the time the warranty claim was made.
- This limited lifetime warranty shall not cover any damage inflicted on this product as a result of improper installation, accident, abuse, misuse, natural disaster or modification. This lifetime warranty shall not apply to any product that had been sold as used/second-hand or that had been resold.
- This limited lifetime warranty shall not extend to any product or damage to a product caused by failure to follow the instruction manual, through abuse or misuse or improper usage of the products.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.















