Butler Creek 30170 Flip-Open Objective Scope Cover 40.90mm Size 17 Black Polymer

The Butler Creek Flip-Open Objective Scope Cover delivers fast, single-finger lens protection for hunters and shooters who do not want to fumble with loose caps in the field. Designed to fit scopes with a 40.90mm objective lens (Butler Creek Size 17), this cover installs with a simple slip-on fit and creates a watertight, airtight seal against the scope body. A spring-loaded hinge flips the cap open with a quick press of the thumb and holds it out of the sight picture until you snap it closed, so you never lose your point of aim.

Molded from durable, weather-resistant black polymer, the Flip-Open is built to take years of range abuse and field exposure. The slip-on installation requires no tools and no ring adjustments, and the low-profile cap will not snag on slings, packs, or brush. When the optic is not in use, the cover keeps dust, dirt, rain, and snow off the front element, preserving clarity and extending the life of your scope glass. It is an easy, affordable upgrade that protects your optic investment on every hunt, match, or patrol.