JMac - MDi-co

AB-9R with Brace Adapter and 1913 Folding Mech

(1 Review)
Current Stock:
11.00 Ounces
Add a Brace
1913 Adapters

If your firearm doesn't already have a 1913 attachment rail on the rear choose the appropriate adapter above!

(A)rm(B)ar(9)inch(R)ise + AB-BA Brace Adapter + our 1913 Folding Mech (not assembled)

Lightweight and Rigid!

  • Modular Design - Brace/Stock with many mounting options
  • Integrated QD Sling Socket
  • 9" Length
  • 7075 T6 Aluminum
  • Hard-Coat Anodized

This adapter mounts to the end of our AB (Arm Bar) and allows you to install braces like the TailHook from Gear Head Works

  • Anti-Rotational design
  • 7075 T6 Aluminum
  • Type 3 Hard-coat Anodize


JMac 1913 folding mechanism.



Installing a stock on your pistol makes it an SBR. You are responsible for knowing and following your local/state/federal laws!

JMac Customs LLC is not responsible for the end users misuse  of our products.


Reviews (1)


Written by Seth Spooner on Feb 8th 2022

I purchased the AB-9R and I am absolutely floored about this brace arm setup. I have tried several options over the years and this has to be the best setup I have personally tried! It was everything I expected from JMAC and honestly much more. Would recommend Would buy again

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