MIL-PRF-13830B, PERFORMANCE SPECIFICATION: OPTICAL COMPONENTS FOR FIRE CONTROL INSTRUMENTS; GENERAL SPECIFICATION GOVERNING THE MANUFACTURE, ASSEMBLE, AND INSPECTION (9 JAN 1997) [SUPERSEDING MIL-O-13830A]., This specification covers the manufacture, assembly and inspection of finished optical components such as lenses, prisms, mirrors, reticle windows and wedges for fire control instruments.