Butler Creek Flip-Open Objective Lens Cover - Black Polymer, 36.30mm, Size 07 (Model 30070)

A Butler Creek flip-open objective lens cover keeps your scope's glass protected when it matters most—and gets out of your way the instant you need a shot. This Size 07 model fits 36.30mm objective lenses and uses a simple thumb-flip design so you can snap the cover open without breaking your sight picture or making extra noise that might spook game. Whether you're hunting in wet brush, dusty terrain, or sub-zero conditions, a quality objective cover is one of the easiest upgrades to extend your optic's lifespan and keep your glass clear when seconds count.

Butler Creek's flip-open design relies on silent spring hinges—no loud plastic snaps or metal clicks to telegraph your movement. The cover mounts via a water-tight friction fit that grips the scope barrel firmly enough to stay put through recoil and rough handling, yet releases cleanly when you need it. An air-tight semi-O-ring seal works to keep dust and moisture out when the cover is closed, so your lens stays dry and clear between trips to the range or field. The whole package weighs less than an ounce, so there's no penalty to always carrying it mounted.

The black polymer construction is durable and non-reflective, and the cover is truly ambidextrous—it flips open equally well from either side, no matter how you're shouldering your rifle. Butler Creek backs this cover with testing down to –40°F, meaning it'll function reliably in the harshest conditions you're likely to hunt in. Size 07 is the correct choice for scopes with 36.30mm objectives; refer to the manufacturer's size chart if you're uncertain of your scope's objective diameter.

Key Features

• Fast flip-open design with silent spring hinges—deploy instantly without spooking game
• Water-tight friction fit and semi-O-ring seal protect glass from moisture and dust
• Truly ambidextrous—open from either side depending on your grip
• Weighs less than an ounce for negligible load penalty
• Tested to –40°F for reliable performance in extreme cold
• Black polymer construction is durable and non-reflective

Specifications

Frequently Asked Questions

How do I know Size 07 is right for my scope?

Size 07 is designed for scopes with 36.30mm objective lenses. If you're unsure of your scope's objective diameter, check your scope's manual or look for the spec online—objective size is usually printed on the scope tube or marked in the product description. Using the wrong size cover will result in a poor fit.

Will this cover stay on during recoil and rough handling?

Yes. The water-tight friction mount is designed to grip the scope barrel securely enough to withstand recoil and field use without shifting or falling off. The friction fit is calibrated to hold firm during normal hunting and shooting activities.

Can I open this cover quickly with one hand?

The flip-open design is meant to deploy quickly with a thumb push, and it's ambidextrous, so you can operate it from either side of the rifle. Whether it's truly one-handed depends on your grip and how the cover is positioned, but the intent is fast, intuitive operation.

Does this cover protect against rain and dust when closed?

Yes. The water-tight friction fit and semi-O-ring seal work together to keep moisture and dust out when the cover is closed. The seal is not absolute—this is a field-grade hunting cover, not a laboratory-grade dust-proof container—but it provides solid protection for typical hunting and shooting conditions.