Caliber: .22LR / .22 Mag / .17 HMR / .17 MachII - Sound Reduction: 41dB - Mount: Direct Thread - Materials: 17-4PH SS Titanium - Finish: Cerakote - Length: 5.25 - Diameter: 1 - Weight: 4.1 oz - The ELEMENT 2 features a number of design improvements that are the result of feedback from you our customers. The 1/2-28 tpi mount is now a full-diameter flush fit design CNC machined from durable and lightweight Titanium. The mount is permanently installed in the tube which is now corrosion resistant Grade 9 Titanium. At the heart of the ELEMENT 2 are the same highly advanced heat treated 17-4 stainless steel K-baffles that continue to deliver class leading performance with .22 LR .17HMR and .22Magnum hosts.