The ELEMENT 2 features a number of design improvements that are the result of feedback from you, our customers. The ½-28 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.