JMac - MDi-co

ST-6 with 1913 Folding Mech

(5 Reviews)
Current Stock:
7.60 Ounces
1913 Adapters
SBA3 Brace
Out of stock

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

(S)keletonized(T)ube(6)inches long and 6 positions with our own 1913 folding mech (Not Assembled)

This M4 tube adapter replaces the standard buffer tube to ensure the stock folds as flat as possible!

Fits most M4 style stocks/braces 

Lightweight and Rigid

  • Integrated QD Sling Sockers
  • 6” Length
  • 6 positions 
  • Compatible with SIG folding mechanisms
  • 7075 T6 Aluminum
  • Type III Hardcoat Anodized

JMac 1913 folding mechanism.


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 (5)

top tier parts from jmac

Written by steven a on Mar 15th 2022

Bought this for BRN180. Super lightweight, solid hinging mechanism, and buttery smooth when adjusting length of pull. Zero wobble with MFT stock. Looks badass.

EXPENSIVe, Quality, made my friend go into JEALOUS fit!

Written by J M on Jan 19th 2022

got the Akm-rsa then got this bc the sig stock i wanted was sold out. i was considering getting the midwest ind folding a2 buffer tube untill i found out how much it weighed. a good friend of mine just saw this set-up on my rifle and almost lost it he has the magpul Zhukov folding stock and i could tell he wants a jmac now! running the moe buttstock and it folds flush in any position i do not have an optic rail. i think that a magpul sl stock that i was gonna get would have been too wide to be flush in all positions. i really like my whole set up a whole lot better but have 380$ into the folding stock it so thats kind of pricey

AwesOme, whEther fixed or folded

Written by Diedrich on Dec 6th 2021

This skeletonized tube is a game changer for wanting an AR style collapsing stock on on an AK. Runs smoothly with 1913 folding mech on pistol Note: If you combine with skeletonized tube with the folding mech, have a slimmer brace/stock if you want to have a more flush fit. Another great product! Well done Justin, Ash, and JMac Team!

ST-6 for my 7.62 Gen 2 Pistol

Written by Shastian on Oct 13th 2021

Absolutely love this stock! My first time purchasing from JMAC and the quality is superb. I purchased the adapter with this, and it fit perfectly. It folds easier now and locks into place nicely. I thought it needed to be like an inch longer, but it actually feels really good in position 3 and 6. Overall great product. A++++

Jmac Folding Mec ST-6

Written by Reece D. Nors on Sep 2nd 2021

I got one of these guys for my BRN-180 Build and it couldn't be any more perfect. Not only does it look awesome, it's much more stable than some of the big name side folders out there. A buddy of mine also has a BRN-180 build with a certain name brand stock off of one of their snake guns and it would begin to fold in on itself if you put too much pressure on it while shooting. The JMac does no such thing, its easy to deploy and break down and there is no wobble. Super glad I went with this option and not with what so many other people are using. Besides being different, it's good to know i've got a stable platform on what is now my main shooter. Quality, application, and cool factor are all there, can't recommend enough.

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