Kak Industry A2-Birdcage A2 Birdcage 1/2X28

The Kak Industry A2-Birdcage A2 flash hider is the go-to muzzle device for AR-15 builders who want a proven, no-nonsense design that just works. This 1/2x28 threaded classic is built for 5.56 NATO rifles and delivers the iconic profile that's been a staple of AR platforms for decades. Whether you're completing a new upper, replacing a worn-out muzzle brake, or assembling a rifle optimized for reduced flash signature, the A2 birdcage remains one of the most reliable and trusted choices on the market.

Heat-treated and phosphate-coated steel construction gives this flash hider genuine durability—it's built to handle thousands of rounds and harsh field conditions without degrading. The milled flat surfaces make installation straightforward, so you won't need a gunsmith or specialized tools to get it mounted. At just 1.75 inches overall length, it keeps your rifle balanced and doesn't add unnecessary length to your barrel.

This is the real deal for shooters and builders who appreciate function over flash. It's not fancy, but it's effective—a timeless design that AR enthusiasts rely on for hunting, range work, and tactical applications. If your build calls for a proven A2-style flash hider and your upper receiver is chambered in 5.56 NATO with 1/2x28 threads, the Kak Industry birdcage deserves your consideration.

Key Features

• Heat-treated and phosphate-coated steel for extended durability
• Classic A2 birdcage design proven across millions of AR-15s
• Milled flats for simplified installation without specialized tools
• Compact 1.75-inch profile minimizes added length
• Optimized for 5.56 NATO chambered rifles

Specifications

Frequently Asked Questions

Will this A2 birdcage fit my AR-15?

The Kak Industry A2-Birdcage is threaded 1/2x28, which is the standard thread pitch for 5.56 NATO barrels on most AR-15 rifles. If your upper receiver is chambered in 5.56 NATO and your barrel has 1/2x28 threads, this will fit. If you're unsure of your barrel's thread pitch, verify before ordering.

Does this flash hider come with a crush washer?

No, the crush washer is not included. You will need to source one separately if you intend to time the device or use one during installation.

What's the benefit of the A2 birdcage design?

The A2 birdcage is designed to reduce muzzle flash signature, making it effective for both training and field use. It's a time-tested design that balances flash reduction with a minimal profile and straightforward installation.

How do the milled flats help with installation?

The milled flat surfaces provide gripping points that allow you to install the flash hider using a standard wrench or vise block—no special tools needed.