A3 Industries Triangle Folding Stock 9'' W/Cheek Rest & Buttpad Polymer Blk

The A3 Industries Triangle Folding Stock is a lightweight, compact stock solution for shooters who need to shrink their rifle's footprint without sacrificing stability or comfort. Built from fiber-reinforced polymer with a rigid Zytel body and machined aluminum components, this 9-inch folding stock combines durability with practical everyday usability—whether you're running a short-barreled rifle (SBR) for tactical work, transport, or cramped shooting positions. The integrated cheek rest and rubber buttpad keep your cheek welded and your shoulder comfortable even during extended sessions.

What makes this stock stand out is the engineering underneath: a heavy-duty steel hinge that locks positively in the open position yet deploys and folds with satisfying speed when you need to collapse the rifle. That's the kind of reliability detail that matters when you're relying on your gun to work the first time, every time. The two QD sling mounts positioned at the front of the stock give you mounting flexibility and fast-adjust options for field use.

If you're building an AR-pattern rifle, sbr, or other platform that accepts this stock, the Triangle folding design balances minimal collapsed length with the rigidity and shooter comfort you can't compromise on. The polymer construction keeps weight down compared to aluminum-heavy alternatives, while the textured surfaces and molded cheek support mean you won't be fighting your gun during aim.

Key Features

• Fiber-reinforced Zytel polymer body for durability and light weight
• Machined aluminum internal components for rigidity
• Integrated injection-molded rubber cheek rest for consistent head placement
• Textured rubber buttpad for secure shoulder contact
• Heavy-duty steel hinge with positive latch in open position
• Quick deployment and collapse for field use
• Two QD sling mounts at front of stock
• 9-inch overall length

Specifications

Frequently Asked Questions

What platform or rifle does this stock fit?

The A3 Industries Triangle Folding Stock is a mil-spec pattern stock body. Verify compatibility with your platform before purchase, as stocks are caliber and configuration specific.

What's the collapsed length when folded?

The stock folds down from its 9-inch extended length; exact collapsed measurement is not provided in the product specs. Contact us for detailed dimensions if a specific collapsed profile is critical to your build.

Does the cheek rest affect shooter comfort?

Yes. The integrated injection-molded rubber cheek rest is designed to help you achieve consistent head placement on the stock and improve cheek weld during aiming, making it especially useful for optic-mounted rifles.

What's included in the box?

The product includes the stock assembly with cheek rest and buttpad installed. Specific accessories or mounting hardware are not detailed; confirm what's included at purchase.