Butler Creek Flip-Open Objective Lens Cover, Black Polymer, Size 19 (41.80mm) - Model 30190

The Butler Creek Flip-Open Objective Lens Cover in Size 19 (41.80mm) is a quick-access lens protection system designed for hunters and shooters who need reliable optics care without fumbling during critical moments. This black polymer cover pairs the speed of a thumb-activated flip design with a custom-fit friction mount that keeps it secured to your scope until you need it. Whether you're glassing in harsh conditions or waiting for the shot to materialize, you'll appreciate having your objective lens sealed and ready—then instantly accessible when opportunity presents itself.

The engineering here reflects real-world field demands: silent spring hinges that won't alert game, a watertight design with semi-O-ring construction that sheds water and keeps dust and moisture out even in punishing conditions, and an air-tight seal between shots. Tested down to –40°F, this cover performs when temperature and weather push hardest. The ambidextrous design works equally well for left- and right-handed shooters, and at less than an ounce, it adds negligible weight to your rig.

Butler Creek Size 19 covers are engineered to fit a wide range of scope objective lenses in the 41.80mm diameter range. The custom-fit friction mount system means no tools, no permanent modifications—just pop it on and go. If you're running a scope in this size class and want lens protection that's faster and quieter than fumbling with traditional lens caps, this is the standard that's been proven in the field for years.

Key Features

• Thumb-activated flip-open design for instant access during critical moments
• Custom-fit friction mount anchors securely to your scope without tools
• Water-tight and air-tight construction keeps out moisture, dust, and debris
• Silent spring hinges designed not to spook game
• Ambidextrous operation for any shooter orientation
• Tested to –40°F for extreme weather performance
• Weighs less than one ounce for minimal impact on overall rig weight
• Black polymer construction for durability and low visibility

Specifications

Frequently Asked Questions

What scope objective sizes does the Butler Creek Size 19 fit?

This cover is designed for objective lenses with a diameter of 41.80mm. Butler Creek offers a range of sizes, so confirming your scope's objective diameter against the Size 19 specification ensures a proper fit and effective seal.

Is the Butler Creek flip-open cover ambidextrous?

Yes. The design works equally well for left- and right-handed shooters, so you don't need to worry about orientation or which hand controls the flip mechanism.

How does the friction mount attach to my scope?

The custom-fit friction mount uses a secure grip system that anchors the cover directly to your objective lens assembly without tools, modifications, or permanent fasteners. Simply slide it on and it stays put until you're ready to flip it open.

Will this cover help protect my lens in wet conditions?

Yes. The water-tight and air-tight semi-O-ring design keeps moisture and dust out when the cover is closed, and it's rated to perform in extreme cold down to –40°F, making it dependable in harsh weather and challenging field conditions.