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FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option Up to $22.40 Off — Free 2 Day Shipping w/ code 2DAYAIR — 2 models

Special offer available for this product. Click here to see!
FAB Defense M4 Folding Buttstock for Moss 500, Black, FX-AGMF500FK
FAB Defense M4 Folding Buttstock for Moss 500 w/ Shock Absorber, Black, AGMF500-FKSB
FAB Defense M4 Folding Buttstock for Moss 500, Black, FX-AGMF500FK
1 of 2 images
FAB Defense M4 Folding Buttstock for Moss 500, Black, FX-AGMF500FK
FAB Defense M4 Folding Buttstock for Moss 500 w/ Shock Absorber, Black, AGMF500-FKSB
2 of 2 images
FAB Defense M4 Folding Buttstock for Moss 500 w/ Shock Absorber, Black, AGMF500-FKSB

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Questions & Answers
What slings are compatible with this folding stock? Manufacturer Answer

Any sling that will fit in the sling mount adapter

by FAB Defense, Manufacturer, February 4, 2026
do they make one of these for the 940? Manufacturer Answer

No. we do not make it for the 940

by FAB Defense, Manufacturer, July 25, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Very Well Made - One Major Design Flaw by TexasCruzr, Verified Owner, July 1, 2025
I got the folding, shock absorber version. I really wanted this to be my new 590A1 stock. It is VERY well made. The folding system is robust, and clicks firmly into the folded and unfolded positions. The shock absorber is firm enough to properly s...
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2/2 found this helpful
Helpful Positive Review
Installation takes a couple minutes to figure out, besides that it feels really nice by Average Gunsmith, Verified Owner, January 17, 2024
Besides there being no instructions it feels really good in the hands once it is installed. Installed it onto a 590a1. Here are some simplified instructions to save future people a little time since there are no videos out there on it. Open the pisto...
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10/10 found this helpful
Helpful Positive Review
Great product but no instructions by Devn, Verified Owner, August 20, 2018
Product is a great addition to my home defense shotgun and works great. Buyers should be aware that there are no instructions so installation is a bit confusing. I used the original bolt that came with my pistol grip but that was too long and broke a...
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12/12 found this helpful
Helpful Positive Review
Great Tactical Stock by Shotgun lover, February 12, 2024
Well made, durable, folding and shock adsorbing. What else could you want!
1/1 found this helpful
Helpful Negative Review
everything came as is, except the actual buttstock by willy, Verified Owner, August 26, 2023
Delivered super fast. But the buttstock attachment was not as advertised. So be weary if you buy the fab defense mods. They may not fit. But overall functionality works great. Seems very sturdy and fit my mossberg 590 extremely well. Another downside...
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2/2 found this helpful
Most Recent Reviews
Won’t lock to folded position by Matthew Ivey, Verified Owner, January 24, 2026
Well made. Made in Israel which I like. Haven’t shot with it yet, seems to be great in the unfolded position. Just doesn’t lock to the folded position while it’s installed. It should lock, because it does before I installed it. Minor problem rea...
Read More...
0/1 found this helpful
Read All 11 Reviews

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Product Info for FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option

Our FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option provides you just what you need for a quality tactical upgrade.image

Advantages:

  • Rock solid One-Piece Ergonomic Design
  • Special Non-Slip Texture
  • Made from Reinforced Composite Materials
  • Enhances Natural Fighting Stance and Hold on your Shotgun.
  • Slightly Angled to Counter Recoil
  • No Gunsmith Required
  • Provides Storage Compartment for Batteries/Cleaning Kit
  • Optional- M4 Style Aluminum Buffer Tube and Our Famous GLR-16 Buttstock Upgrade

Compatibility:

  • Mossberg 500/590 & Maverick 88, 12-gauge Shotguns

Specifications for FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option:

Manufacturer: FAB Defense
Color: Black
Gun Model: Mossberg Model 590, Mossberg Model 500
Stock/Brace Material: Steel, Polymer, Aluminum
Condition: New
Additional Features: Pistol Grip
Finish: Black

Package Contents:

  • FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option

What firearm models does the manufacturer say FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option is compatible with?

The manufacturer suggests that FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option is compatible with Mossberg Model 500, Mossberg Model 590

FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option Orderable Models

List of Orderable Models

  • FAB Defense M4 Folding Buttstock for Moss 500, Black, FX-AGMF500FK , MPN: fx-agmf500fk , UPC: 7290105940841 , Code: 1S0-2SF-M4FBM-FX-AGMF500FK
  • FAB Defense M4 Folding Buttstock for Moss 500 w/ Shock Absorber, Black, AGMF500-FKSB , MPN: fx-agmf500fksb , Code: 1S0-2SF-M4FBM-AGMF500-FKSB

FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option Unavailable & Discontinued Models

List of Unorderable Models

  • USED, FAB Defense M4 Folding Buttstock for Moss 500 w/ Shock Absorber, Black, AGMF500-FKSB , MPN: FX-AGMF500FKSB-EDEMO , Code: 1S0-2SF-M4FBM-AGMF500-FKSB-EDEMO-RE-B
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Last updated 2026-08-21 UTC.