Q&A for FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock For Mil-Spec/Commercial Tubes

FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock For Mil-Spec/Commercial Tubes

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Kip, member, from MO, United States, asked on September 26, 2020

Is the sling swivel socket free rotating or stepped?

Expert Answer

Answered by Armando R., Gear Expert, from IL, United States, on February 02, 2021

FAB Defense provides no information as to whether the QD socket is free spinning or if its limited rotation. You will need to contact FAB Defense directly to verify. Here is their contact information:

https://www.fab-defenseus.com/contact-us

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Jake, member, from MI, United States, asked on August 12, 2025

Will this fit on a Cmmg banshee 9mm?

Manufacturer Answer

Answered by FAB Defense, Manufacturer from FL, United States, on September 03, 2025

It will fit any commercial or mil-spec tube

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DeadAirTi, member, from AZ, United States, asked on March 02, 2024

What's the difference between this "1S0-BSC-ARSK-FX-GLCOREB-OPMOD-Grey-KIT2023" model and the sale version"99-BSC-HGFR-FX-GLCOREB-OPMOD-Grey"?

Manufacturer Answer

Answered by FAB Defense, Manufacturer from FL, United States, on July 25, 2025

there's No difference

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Ctc, member, from WA, United States, asked on June 24, 2023

Will this work on a kak pistol brace buffer tube?

Expert Answer

Answered by Ethan, Gear Expert, from IL, United States, on June 28, 2023

The FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock will be compatible with any carbine length Milspec or Commercial spec buffer tube. If you are unsure of whether you have a carbine length Milspec or Commercial tube, email us at Techsales@opticsplanet.com for assistance.

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darktechie, member, from TX, United States, asked on January 05, 2023

Is this compatible with Ruger AR-556?

Expert Answer

Answered by Ethan, Gear Expert, from IL, United States, on January 30, 2023

Yes, the FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock is compatible with the Ruger AR556.

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Nizar, guest, from CA, United States, asked on August 21, 2022

Does FAB Defense sell a THICKER PAD for their GL-CORE AR-15/M4 Skeleton Style Buttstock ??

Expert Answer

Answered by Hunter, Gear Expert, from OH, United States, on August 30, 2022

Currently there is not a thicker butt pad for the FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock.

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Mark, guest, from AR, United States, asked on August 09, 2022

Will this work PSA 10.5" CARBINE-LENGTH 5.56 NATO 1/7 NITRIDE CLASSIC MFT BATTLELINK PISTOL? Has screw at bottom you tighten. Need new buffer tube?

Expert Answer

Answered by Hunter, Gear Expert, from OH, United States, on August 22, 2022

The FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock For Mil-Spec/Commercial Tubes is considered a stock and cannot be used on an AR15 pistol without the proper government forms and approval. If you have the correct ATF forms completed and approved you will need a Mil-spec or Commercial buffer tube for this stock.

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Trent Johnston, member, from TX, United States, asked on August 02, 2022

Will this fit a bush master commercial? Also will the pistol grip fit as well? I ordered a b5 systems stock and grip but was not compatible.

Expert Answer

Answered by Ethan, Gear Expert, from IL, United States, on August 12, 2022

The FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock will fit either Milspec or Commercial tubes with the included adaptor. The pistol grip will fit any AR platform rifle or pistol that accepts AR15 style pistol grips.

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George, member, from FL, United States, asked on July 15, 2022

I have a Rock River Arms 6-postion tactical stock that I'm wanting to change out for this stock. Does the buffer tube or spring need to be changed?

Expert Answer

Answered by Hunter, Gear Expert, from OH, United States, on July 29, 2022

The FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock will fit both Mil-Spec and Commercial buffer tubes. The included adapter will allow it to work on both. So it will work with a Rock River Arms buffer tube and you will not need to change the buffer or spring.

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COJ, member, from GA, United States, asked on June 09, 2022

Are those slots for a web sling attachment? Nothing is said anywhere about it, but looks like maybe it could work?

Expert Answer

Answered by Hunter, Gear Expert, from OH, United States, on June 21, 2022

The FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock has QD sling mounting points. The slots cut in the stock could have a sling fed through them instead of using a QD sling.

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Q&A for FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock For Mil-Spec/Commercial Tubes — 47 Questions & 46 Answers