The Dead Air Sierra 5 XM is a purpose-built 5.56/.223 suppressor intended for duty, tactical, and range use where durability and consistent performance matter. It ships as a mount kit with a Xeno adapter and a 1/2-28 Xeno flash hider to support quick-detach mounting on compatible rifles. The design emphasizes a compact footprint and robust construction for heavy firing schedules without barrel length restrictions.

Key Specifications

• The suppressor is rated for 5.56 NATO / .223 Rem cartridges and compatible use cases.
• The tube measures 4.87 inches in length without the adapter and 5.72 inches overall when fitted with the Xeno adapter.
• The outside diameter measures 1.5 inches for a compact profile on rifles.
• The unit weighs 10.8 ounces without the adapter and approximately 13.3 ounces with the Xeno adapter and flash hider installed.
• The included thread pattern for the flash hider is 1/2-28 to match common 5.56 muzzle threads.
• The suppressor features welded baffles wrapped in a stainless steel outer tube with a black Cerakote finish.
• The NFA attachment method is a quick-detach (Xeno) system and the kit includes the Xeno adapter and 1/2-28 Xeno flash hider.
• This model is specified as full-auto rated with no barrel length restrictions, designed for heavy use.

Finished in black Cerakote with a utilitarian knurled exterior, the Sierra 5 XM is built to withstand demanding schedules while keeping overall length and weight low. Inclusion of the Xeno adapter and flash hider makes it straightforward to attach to compatible rifles and to configure for user needs. Its compact dimensions and robust construction make it a practical choice for professional users, range-focused shooters, and others seeking a durable 5.56 suppressor solution.