Dead Air Mask HD Thread Adapter FN 5.7 to 1/2-28

The Dead Air Mask HD Thread Adapter provides a direct thread conversion for Mask‑HD users who need a 1/2×28 mounting interface from an FN 5.7 host. It installs between the firearm muzzle and the Mask‑HD backplate to enable compatibility with hosts using the 1/2×28 thread pitch. The adapter is finished in black and is supplied as a compact, lightweight conversion accessory. Note: this adapter is intended for use with aftermarket barrels and will not function on OEM FN barrels.

Key Specifications

• Compatible with **FN Five-seveN** host geometry.
• Thread pitch: **1/2×28**.
• Designed for use with the **Mask-HD** suppressor backplate.
• Product type: **Thread Adapter**.
• Finish: **Black**.
• Weight: **0.05** (as listed).
• Additional feature: **Requires aftermarket barrel**.
• Compatibility note: **Will not work on OEM barrel**.

This adapter provides a straightforward, mechanical thread conversion that expands the Mask‑HD’s host compatibility to platforms using 1/2×28 threads. Its compact form factor and discreet finish make it a practical choice for users who need a simple, reliable interface while retaining the Mask‑HD’s intended alignment and fit characteristics.