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Midwest Industries Side Folder With MI Stock Tube

Manufactured by Midwest Industries
Manufactured by Midwest Industries
6 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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The Midwest Industries Side Folding Adapter with Stock Tube is the perfect way to add an AR style carbine stock to any of your favorite firearms like an AK, CZ Scorpion EVO, or anything else with a vertical picatinny rail on the rear of the receiver. This Side folding stock adapter is constructed from heavy duty 4140 steel with a full length locking lug for maximum strength and a Manganese Phosphate finish. The steel clamp with large surface engagement securely locks the stock in both the folded and extended position and can be configured for either right or left side folding. The aluminum stock tube features Mil-Spec dimensions for compatibility with a wide variety of stocks allowing you to easily set up your firearm exactly how you want. Additionally, the stock tube features a water tight compartment for storing essential tools and supplies.

Note: Not for use with AR-15 or AR-308.

  • Constructed from heavy duty 4140 Steel
  • Full length locking lug
  • Right and left side configurable
  • Mil-Spec aluminum stock tube with storage compartment
  • Hardcoat anodized tube
  • Manganese Phosphate steel components
  • 7.35" Overall length
  • .75" Folded length
  • 13.5 oz. Weight
  • Made in the U.S.A.

Midwest Industries is a quality manufacturer of tactical weapons accessories. They produce handguards, rails, and iron sights for many of the most popular weapon platforms like the AR-15, .308, Sig MCX, AK-47, and many more. Their goal is to manufacture the highest quality parts at affordable prices backed by a lifetime guarantee.
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BrandMidwest Industries
FitmentM1913 Picatinny
TypeStock Adapter
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

6 reviews

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Hard to fold closed but quick fix


The tube is great for carrying NFA paperwork, though the stock is difficult to fold closed due to the tightness of the factory spring. However, in less than 5 minutes I easily replaced the factory spring with a spring for an an AR-15 forward assist. The stock still locks up tight and now it also opens and closes easily.

The Best Sig Style AR tube folder out there


MI products have always been exceptional quality. This side folder Buffer tube is no different. It is built like a tank (folding and locking mechanism are made from steel and the tube itself is solid aluminum up until the storage cap. The tube is mil spec and fits an SBA 3 brace perfectly. The tube is held onto folding mechanism with two screws so that you can orient the tube and folder to fold left or right when you attach it to the Sig type rail. It is heavy, but it is very good at balancing the front heavy Weapons like the Ruger PCC charger or Cz Scorpion Evo (to a lesser extent). The lockup on the folder is very tight as well and has not loosened so far under firing. Buy with confidence!

Great option to put a brace on an AK pistol

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The Midwest Industries side folding tube is a perfect option for adding a buffer tube brace to an AK pistol. These are so much nicer in fit and finish than most of the SB Tactical folding options, and the price (especially when on sale) is a lot more quality for the money. The MI knuckle is much larger and more robust than the SB one. To use with a brace and maintain pistol length of pull, I ordered the SB Tactical Length of Pull Limiter plugs.

Perfect for my need

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A little on the heavy side, but you sure won't be worrying about durability. Locks up solid in the open position, and has a very positive detent to hold it in the folded position. The storage compartment is ok; dunno what I'll put in it, if anything.

Great for AKs

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Midwest makes great products. This stock tube can fold either left or right and comes with thread lock for you. It fits rifle stocks not pistol braces. Primary Arms has the best price and fastest shipping.


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Very nice made Very well sold I love that it has a storage compartment