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$ 189.95

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A3 Tactical is proud to release our new Modular Folding Stock / Arm Brace system. This cross-platform system is designed from the ground up to fit varying applications and provide modularity in style, form, and function.  The single pivot design utilizes a positive spring-lock for both the open and closed position, allowing the user to simply and quickly release the stock from either position.

Due to the modularity of the design, the stocks can be configured with multiple butt-plate options or with the arm-brace adapter designed for use with the Gear Head Works Tailhook (Tailhook not included). The two can easily be swapped by simply removing two #10 screws.

Another few features worth mentioning are the clearances and ambidextrous aspects of the design. Since the folding mechanism is symmetrical, the stock can be folded either left or right by simply flipping the mount up or down. The double-curve relief on the stock extension is designed to clear the ejection port on the CZ Scorpion, GP Stribog, and Sig MPX/MCX/Rattler should the user choose to fold to the right. The compact nature of the hinge only adds .75” to the overall length of the firearm when folded.

This modular platform is an evolving design, meaning we will continue to develop more compatible products that work with this system. Expect to see more options in butt-plate designs, more stock designs, lengths, etc.

 All machined components are manufactured from either 6061 or 7075 aluminum, and either Type 3 Hardcoat anodized or Cerakoted in Graphite Black. All polymer components are high-strength MJF Nylon. 


  • Modular design for individual personalization
  • Can fold left or right by simply reversing the hinge
  • Positive lock in both positions, open and folded
  • Spring loaded detente with machined hingepin
  • 7075 construction with Type II Hardcoat finish

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