+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option Up to $22.40 Off, Coupon Available w/ Free S&H — 2 models

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

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
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...
Read More...
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...
Read More...
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...
Read More...
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...
Read More...
2/2 found this helpful
Most Recent Reviews
FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option by Fred, March 26, 2026
Fits the 590S with 18.5" barrel perfect, no instructions to put on, but it's not hard to install, you can figure it out.
Read All 11 Reviews
Eligible models will have a savings offer. Apply coupon and add the item to your cart for savings on that select model! Limited time only. Cannot be combined with other promotions or offers. See promotion details.
Show In Stock Only
2 Models Available

Show with deals only:

Coupon Available
Gun Type
All
Included Accessories
All
Search

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

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
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-07-10 UTC.