Butler Creek Flip-Open Objective Lens Cover, Black Polymer, 39.60mm, Size 15 (30150)

A Butler Creek flip-open objective lens cover is a smart investment for any serious hunter or precision shooter who wants to protect their scope glass until the moment the shot matters. The Size 15 model, with its 39.60mm objective diameter, is custom-fitted to work with a wide range of modern rifle scopes—keeping dust, moisture, and debris off your lens without adding bulk or weight to your rig. When opportunity strikes, you flip it open with your thumb and you're ready to fire; no fumbling, no delay, no missed moments.

Butler Creek's design philosophy here is about reliability under real hunting and field conditions. The friction mounts grip your scope securely without tools, and the semi-O-ring seal is tested to stay effective even in brutal cold—down to –40°F. The spring hinges are engineered to operate silently, so your cover won't spook game during the stalk or at the range. Because it weighs less than an ounce, it doesn't meaningfully affect your scope's balance or mounting.

The ambidextrous flip-open mechanism works equally well whether you shoot right- or left-handed, and the black polymer construction resists damage and glare without any fussy maintenance. It's the kind of simple, proven accessory that pays for itself the first time it saves your glass from a branch whip, a rain shower, or dust that would otherwise settle on your optics right when you need to see clearly.

Key Features

• Fast flip-open design for quick, one-handed access
• Custom-fitted friction mount—no tools required
• Semi-O-ring seal keeps out dust and moisture
• Tested and rated to –40°F for extreme-condition reliability
• Silent spring hinges won't spook game
• Truly ambidextrous—works for right- and left-handed shooters
• Weighs less than one ounce
• Black polymer construction

Specifications

Frequently Asked Questions

Will this objective lens cover fit my scope?

The Size 15 model is designed for 39.60mm objective lenses. Butler Creek makes multiple sizes, so it's important to match your scope's objective diameter to the correct cover size. Consult the manufacturer's size chart to confirm this model is right for your optic.

Can I use this cover in cold weather hunting?

Yes. Butler Creek tested this design to perform reliably at –40°F, making it suitable for late-season hunting and winter range work where extreme cold is a factor.

How does the mounting system work?

The cover uses a custom-fitted friction mount that grips your scope without tools or fasteners. It creates a watertight and airtight seal with a semi-O-ring, and the friction fit keeps it anchored securely during transport and field use.

Is this cover ambidextrous?

Yes, the flip-open mechanism works equally well for right- and left-handed shooters, and it operates silently so it won't disturb game or other shooters on the range.