
Availability: In Stock
The Dead Air DA421 GSG 1911 Adapter is a precision-engineered thread adapter that bridges your GSG 1911 pistol to Dead Air Armament suppressors, specifically designed for use with the Mask-HD. If you run a GSG 1911 and want to add sound suppression to your setup, this adapter gives you direct access to Dead Air's premium suppressor line without needing a barrel replacement or gunsmith work—just thread it on and you're ready to mount. The 1/2x28 thread pitch is standard for 1911-pattern pistols in this class, making this a straightforward compatibility solution.
Dead Air Armament builds suppressors for real-world use, and their adapters carry that same precision. This piece is what ties your GSG platform to their modular Mask-HD suppressor system. Whether you're building a dedicated pistol silencer setup or adding to an existing suppressor collection, having the right adapter is non-negotiable—it has to fit square and stay put. This one is engineered for that purpose.
Installation is simple: verify that your GSG 1911 barrel threads match 1/2x28 (which it should), screw the adapter on hand-tight, then mount your Mask-HD. Keep it in your range bag or pistol case alongside your suppressor, and you've got everything you need when you want to shoot quiet.
| Brand | Dead Air Armament |
| Model | DA421 |
| Application | GSG 1911 |
| Thread Pitch | 1/2x28 |
| Compatible Suppressor | Dead Air Mask-HD |
Yes, the DA421 is designed for GSG 1911 pistols with 1/2x28 thread pitch. Verify that your barrel threads match this specification before purchase.
The DA421 is engineered specifically for use with the Dead Air Mask-HD suppressor. It provides the threaded interface between your GSG 1911 and that suppressor model.
No. The adapter threads directly onto your GSG 1911 barrel. Hand-tighten it in place, then mount your Mask-HD suppressor to the adapter.




SKU: 121686659 • Width: 4.4in • Height: 0.7in • Depth: 5.8in • Weight: 0.13oz





Availability: In Stock
The Dead Air DA421 GSG 1911 Adapter is a precision-engineered thread adapter that bridges your GSG 1911 pistol to Dead Air Armament suppressors, specifically designed for use with the Mask-HD. If you run a GSG 1911 and want to add sound suppression to your setup, this adapter gives you direct access to Dead Air's premium suppressor line without needing a barrel replacement or gunsmith work—just thread it on and you're ready to mount. The 1/2x28 thread pitch is standard for 1911-pattern pistols in this class, making this a straightforward compatibility solution.
Dead Air Armament builds suppressors for real-world use, and their adapters carry that same precision. This piece is what ties your GSG platform to their modular Mask-HD suppressor system. Whether you're building a dedicated pistol silencer setup or adding to an existing suppressor collection, having the right adapter is non-negotiable—it has to fit square and stay put. This one is engineered for that purpose.
Installation is simple: verify that your GSG 1911 barrel threads match 1/2x28 (which it should), screw the adapter on hand-tight, then mount your Mask-HD. Keep it in your range bag or pistol case alongside your suppressor, and you've got everything you need when you want to shoot quiet.
| Brand | Dead Air Armament |
| Model | DA421 |
| Application | GSG 1911 |
| Thread Pitch | 1/2x28 |
| Compatible Suppressor | Dead Air Mask-HD |
Yes, the DA421 is designed for GSG 1911 pistols with 1/2x28 thread pitch. Verify that your barrel threads match this specification before purchase.
The DA421 is engineered specifically for use with the Dead Air Mask-HD suppressor. It provides the threaded interface between your GSG 1911 and that suppressor model.
No. The adapter threads directly onto your GSG 1911 barrel. Hand-tighten it in place, then mount your Mask-HD suppressor to the adapter.
SKU: 121686659 • Width: 4.4in • Height: 0.7in • Depth: 5.8in • Weight: 0.13oz



