Swiss K31 Diopter Cover

This model is a protective cover for the diopter rear sight on a Swiss K31 rifle. It is designed to fit snugly over the diopter assembly. The inside surface has a small notch which snaps the cover in place under the windage screw.

I'm using a diopter with color filters made by Centra of Germany. The dimensions of the round ocular are :

• diameter: 27 mm
• length from outer edge to mount: 26 mm

If your diopter uses the W+F mount and is within the above dimensions, this model should fit.