The Midwest Industries Mitrisfodg Triangle Side Folding Stock in Flat Dark Earth (FDE) gives your AR platform the compact storage advantage you need without sacrificing shootability. This triangle side-folding stock folds to the left or right—your choice—bringing your rifle down to fight-ready length for vehicle carry, close-quarters work, or tight spaces where a full-length stock just won't fit. Built from hard-coat anodized 6061 aluminum with steel internals, it's rigid enough to support steady shooting while staying light in the hand.

The heart of the design is a heavy-duty side-folding mechanism machined from 4140 heat-treated steel, paired with a full-length locking lug and steel clamp that lock up tight in both extended and folded positions. You get five QD sling attachment points for mounting options, and the included polymer cheek piece and rubber butt pad deliver the comfort and stable cheek weld you'd expect from a milspec-adjacent stock. Mag phosphate finished steel parts resist corrosion, and the whole assembly weighs just 19 ounces—practical for anyone running a short-barreled rifle or building a compact duty or hunting setup.

Midwest Industries backs this stock with a lifetime warranty, and it ships as a complete assembly ready to install on your rifle. Just make sure your rifle and local laws support the configuration you choose before taking it downrange.

Key Features

• Heavy-duty 4140 heat-treated steel folding mechanism with full-length locking lug
• Configurable for left or right side folding—choose your preference
• Hard-coat anodized 6061 aluminum construction for durability and light weight
• Steel clamp with large surface engagement for positive lock-up in both positions
• Five QD sling attachment points for flexible carry and sling mounting
• Polymer cheek piece and rubber butt pad for comfort and stable cheek weld
• Mag phosphate finished steel components resist corrosion
• Complete assembly—ready to install
• Made in the USA and backed by Midwest Industries lifetime warranty

Specifications

Stock Material	Hard-coat anodized 6061 aluminum
Folding Mechanism	4140 heat-treated steel with full-length locking lug
Folding Configuration	Left or right side fold (user-selectable)
Length of Pull (Extended)	Adds 9.25" to overall firearm length
Length of Pull (Folded)	Adds 0.75" to firearm length in folded position
Cheek Piece	Polymer
Butt Pad	Rubber
Sling Attachments	5 QD sling attachment points
Weight	19 oz. (complete assembly)
Steel Finish	Mag phosphate
Warranty	Midwest Industries lifetime warranty
Country of Origin	Made in the USA

Frequently Asked Questions

Can I fold this stock left or right?

Yes. The Mitrisfodg is configurable for either left or right side folding, so you can set it up to match your dominant side or preferred carry method.

How much length does this add to my rifle?

Extended, it adds 9.25 inches to your overall rifle length. When folded, it adds just 0.75 inches, making it ideal for compact storage and vehicle carry.

What AR platform does this fit?

This is a direct-mount AR platform stock. Confirm compatibility with your rifle's receiver tube before purchase, and verify compliance with all applicable federal, state, and local laws.

Does this come fully assembled?

Yes, the Mitrisfodg ships as a complete assembly ready to install on your rifle. The cheek piece, butt pad, and all steel components are included.