Butler Creek Flip-Open Cover 40.9 mm (objective)

Flip-open covers for riflescope eyepieces and objective lenses are a modern solution that effectively protects hunting optics from scratches, moisture, dust, and impacts. The flip-open cover is locked and opened with just one finger, making it practical to use.

The opening lever is very quiet; it's the quietest flip-open cover on the market! Additionally, it is waterproof and does not become brittle in low temperatures (made from flexible ABS polymer).