HUB Direct Thread Fixed Mount .578x28

Dead Air fixed mount inserts expand suppressor compatibility across multiple firearms platforms. These HUB-compatible inserts feature a 1 3/8-24 connection and are available in numerous thread pitch options including 1/2-28, 11/16-24, 9/16-24RH, .578-28, 3/4-20, 3/4-24, 5/8-24, 5/8-24 SIG TAPER, M18-1, and M18-1.5 AI. Constructed from 4140 HT alloy steel with QPQ black nitride finish for durability and corrosion resistance, these inserts enable compatibility with Dead Air's Nomad, Primal, and other HUB-compatible suppressors. Most models measure 0.765 inches in length with weights ranging from 1.6 to 1.92 ounces, depending on configuration. The extended LT306 variant measures 1.750 inches. Each insert ships as a single unit ready for immediate installation.