Eye protection for the diopter.
Simple rubber eye patch for mounting on the diopter's sight tube.
A great help for biathletes who have trouble "closing" one eye while shooting.
Izhmash diopter: The eye shield must be used together with an extended sight tube with a spacer, otherwise it may damage the diopter's side adjustment. All newer Izhmash weapons delivered from Larsenbiathlon have an extended sight tube with a spacer as standard.
Materials:
Rubber