Midwest Industries Mitrisf Triangle Side Folding Stock Black 6061 Alumn
Midwest Industries
The Midwest Industries minimalistic side folding stock delivers serious functionality without unnecessary bulk. This is a purpose-built option for shooters who need compact storage, transport, or configurations where a traditional fixed stock won't work—think AR pistol builds, SBR setups, or anywhere you're trading length for portability. It's constructed from hard coat anodized 6061 aluminum paired with heavy-duty 4140 heat-treated steel components, so it'll handle field use without compromise.
What sets this stock apart is the thoughtful design: the side-folding mechanism locks solid in both extended and folded positions, with a full-length locking lug for maximum strength. Configuration is flexible—you can set it up for right or left folding depending on your platform and preference. Five QD sling attachment points give you multiple ways to run a sling, and the polymer cheek piece with rubber butt pad add real comfort during shooting. Steel parts are mag phosphate finished for durability. At 15.7 ounces and adding just 0.75 inches in the folded position, it's genuinely compact when you need it to be.
Made in the USA and backed by Midwest Industries' lifetime warranty, this is the kind of no-frills, dependable gear that works. That said, ensure your build complies with all federal and local laws before assembly—ATF requirements vary depending on overall length and configuration.
| Brand | Midwest Industries |
| Material | 6061 aluminum (hard coat anodized), 4140 heat-treated steel components |
| Folding Mechanism | Side-folding with full-length locking lug |
| Orientation | Configurable right or left folding |
| QD Sling Attachments | 5 attachment points |
| Cheek Piece Material | Polymer |
| Butt Pad Material | Rubber |
| Extended Length Addition | 9.25 inches |
| Folded Length Addition | 0.75 inches |
| Complete Assembly Weight | 15.7 oz |
| Steel Finish | Mag phosphate |
| Warranty | Lifetime warranty |
| Country of Origin | Made in the USA |
Yes. The Midwest Industries minimalistic stock is configurable for both right and left folding, so you can orient it to match your setup.
In the extended position, it adds 9.25 inches to your firearm's length. When folded, it adds only 0.75 inches, making it ideal for compact transport and storage.
This is a complete assembly that includes the aluminum body, steel folding mechanism, polymer cheek piece, and rubber butt pad. It also features five QD sling attachment points built in.
This stock is designed with compactness and functionality in mind, making it a natural fit for SBR and pistol configurations. However, it's your responsibility to ensure that your completed build complies with all federal, state, and local laws—particularly ATF requirements regarding overall length and configuration.