Dead Air Mask HD

The Dead Air Mask HD is the value pick for suppressing the PS90 and the rest of the 5.7x28 family. The titanium tube and 17-4 stainless baffles deliver a 6.6 oz package that handles 5.7x28 full-auto without restriction, and the same can serves duty as a primary .22 LR / .22 Mag / .17 HMR rimfire suppressor. That multi-caliber rating is the value play: one $489 stamp covers a PS90, a Ruger 10/22, a 22 Mag revolver, and a Five-seveN.

Mounting on the PS90 requires either the OEM 16-inch threaded barrel shroud (Dorin), the Shaw threaded SBR barrel, or the CMMG SBR barrel with thread adapter. Once threaded, the Mask HD goes direct-thread 1/2x28 and ships with the wrench needed for hand-tightening between range trips. The can disassembles for cleaning, which matters more on rimfire than centerfire.

Under OBBBA, the federal NFA tax on suppressors is zero. ATF eForm 4 approvals in 2026 are running a few days, not the legacy 6-12 month wait, which makes Mask HD an easy yes for any 5.7x28 owner who has been on the fence.