Butler Creek 30250 Flip-Open Objective Lens Cover - Black Polymer, 45.70mm Size 25

A Butler Creek 30250 flip-open objective lens cover in black polymer is an essential piece of kit for any serious hunter or range shooter. Scope optics are among your most vulnerable assets in the field—weather, brush, dust, and impacts can degrade glass and coatings in seconds—and a quality objective cover that you'll actually use makes all the difference. This size 25 model (45.70mm) is purpose-built to fit a specific range of scope objectives, staying put through rough use while remaining fast enough to get out of the way when the moment arrives.

The hinge design is the real story here. Unlike scope caps that require both hands and a pocket to store, the flip-open mechanism lets you sweep the cover aside with a thumb while keeping your grip on the rifle and your eye downrange. The spring hinges operate silently—critical when game is nearby—and the black polymer construction is tough enough to handle field abuse without adding weight. At under an ounce, it won't affect your scope mounting or balance.

Protection runs deeper than just blocking light. The semi-O-ring seal creates an air-tight barrier against dust and moisture, and the friction-mount grip holds the cover firmly to your objective without tools or permanent installation. Butler Creek rates this design to –40°F, so it'll function in serious cold. The ambidextrous flip works equally well if you shoot right or left eye, and the cover stays attached—you won't lose it in tall grass or leave it on the bench.

Key Features

• Flip-open design—sweep aside with one thumb; no two-handed fumbling
• Silent spring hinges—won't alert game when you deploy
• Water-tight, air-tight semi-O-ring seal keeps dust and moisture out
• Custom-fit friction mount anchors securely to scope objective
• Ambidextrous operation—works for right or left-eye shooters
• Tested to –40°F for cold-weather reliability
• Black polymer construction weighs less than one ounce
• Size 25 fits 45.70mm objectives

Specifications

Frequently Asked Questions

Will this cover fit my scope?

The Butler Creek size 25 is designed for 45.70mm objective lenses. Check your scope's objective diameter against the size chart to confirm the right fit—using the wrong size defeats the purpose of a custom-fit seal.

Does the flip-open cover stay attached to the scope?

Yes. The friction mount grips the objective firmly enough to keep the cover in place during field use. It won't detach when you flip it open or during normal handling.

Will it work in cold or wet conditions?

The cover is rated to –40°F and the semi-O-ring seal is designed to keep out moisture and dust even in extreme weather. It's built for serious field hunting where conditions don't pause.

Can I use this cover if I shoot left-handed?

Yes. The Butler Creek flip-open design is ambidextrous, so the hinge works equally well for right or left-eye shooters.