JMac - MDi-co

Folding Stock/Brace Mount for 5.5mm Folding AKs

(1 Review)
Current Stock:
1.30 Ounces

SM adapters utilize the factory rear trunnions and eliminate the need for additional adapters or folding mechs. 

The SM-5.5 is specifically made for the Russian 5.5mm pin folding stocks. 5.5mm trunnions can be found in the SGL (Saiga) rifles and on the new KUSA vityaz clone, not to mention, the trunnion itself is more readily available than the 4.5mm version.

This stock adapter, like the rest of the SM line, will allow you to install all of our Arm Bar and Stocks as well as SIG style stocks. Cheek wield is adjustable by moving the stock/brace up or down on the adapter.

  • 2 height positions
  • Compatible with all of our SS/AB/ST options as well as SIG stocks
  • 7075 aluminum
  • Black hardcoat anodize finish
  • Includes mounting bolt for lower hole
  • Does *not* lock when folded


Attaching a stock to a pistol makes it an SBR and requires NFA approval. 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)

SM-5.5 Adapter

Written by Kurt B on Apr 15th 2022

using the adapter with an SS-8R stock on my KP-9. very tight fit initially, I think this will work in and be a great fit eventually. very pleased with the adapter/stock and overall look and quality of JMac. this adapter is similar to all other products I've received from JMac, great company.

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