We use premium Japanese components for S, B, and RS Series optics. The S Series and B Series are assembled in a military standard (MIL-SPEC) facility in San Diego, and are then shipped to our headquarters in Lander, Wyoming where we inspect and test for quality assurance. The RS Series is assembled in Japan, and the C Series are assembled in the Philippines. Once assembled, they are shipped to our headquarters where each batch is sample-tested for quality assurance.