Biathlon accessories THE original from ANSCHÜTZ Here you will find our original ANSCHÜTZ accessories specially developed for biathlon sports. You can also find our complete range of accessories in our current sales price list, which you can download here. Biathlon | Sights Gof aperture insert item no.: 015244X Particularly thin design aperture insert, to lose as little visible surface as possible in fog. Technical data Weight:1 gMaterial:Steel