DEAD AIR Ghost Fixed Mount .578-28The Dead Air Ghost Fixed Mount . 578 28 is designed for direct attachment of Ghost M and Wolfman suppressors to fixed barrel firearms with . 578 28 threads. This mount eliminates the need for a booster assembly on non tilting barrel hosts, providing a secure and reliable connection. Precision machined from durable materials, it offers a solid mounting solution for larger caliber pistols and pistol caliber carbines. Features Specs: Thread pattern: .