Dead Air Armament Thread Adapter, 1/2 x 28 RH, Fits FN 5.7, Black Finish DA422

The Dead Air Armament Thread Adapter (DA422) is a 1/2 x 28 right-hand thread adapter designed specifically for the FN 5.7 pistol. If you're running a suppressor like the Mask-HD on your 5.7, this adapter bridges the gap between your barrel's thread pitch and your suppressor's mounting system. It's a straightforward, no-nonsense muzzle device that handles the mechanical interface so your suppressor sits right and functions reliably.

The 1/2 x 28 thread pattern is the standard for most 5.7 builds, and Dead Air's manufacturing keeps this adapter precise and durable. Whether you're at the range, in the field, or working on an optimized 5.7 setup, having the correct adapter ensures proper fit and consistent performance. The black finish matches modern tactical aesthetics and holds up to regular handling and cleaning.

This is a critical component if your suppressor or muzzle device doesn't directly thread onto your FN 5.7 barrel—it eliminates guesswork and ensures you've got the right mechanical fit before you mount or fire. Dead Air's reputation for solid engineering extends to their thread adapters; they're engineered to maintain headspace and concentricity, which matters when precision and reliability are on the line.

Key Features

• 1/2 x 28 right-hand thread pitch—standard for FN 5.7 barrels
• Specifically engineered for FN 5.7 compatibility
• Black finish for durability and modern appearance
• Designed to work with Dead Air Mask-HD suppressors and other compatible muzzle devices

Specifications

Frequently Asked Questions

Will this adapter work with my FN 5.7?

Yes. The DA422 is engineered for FN 5.7 pistols with 1/2 x 28 threaded barrels, which is the standard thread pitch for that platform.

What suppressors does this adapter fit?

Dead Air Armament designed this adapter to work with the Mask-HD and other compatible suppressor and muzzle device systems that use the 1/2 x 28 connection. Check your specific suppressor's mounting requirements to confirm compatibility.

Is this a left-hand or right-hand thread?

This adapter features right-hand (RH) threading, which is standard for FN 5.7 barrels and most centerfire rifle and pistol applications.