Butler Creek 30450 Flip-Open Black Polymer Objective Lens Cover - 61.20mm Size 45

The Butler Creek Size 45 flip-open objective lens cover is a no-fuss way to keep your scope's front lens clean and protected when you're in the field. Built from black polymer and sized to fit 61.20mm objective lenses, this cover stays with your gun instead of getting lost in a pack—and when the moment comes, a quick thumb flick opens it silently so you're ready to send it. Whether you're hunting in pouring rain, dusty conditions, or brutal cold, this cover does the job without adding weight or bulk to your rig.

What sets the Butler Creek apart is its friction-mount design, which grips your scope securely without any tools or permanent hardware. The semi-O-ring seal keeps moisture and dust out when the cover is closed, so your glass stays crystal-clear between trips. The spring hinges are quiet—no metal-on-metal ping to spook game—and the whole cover weighs less than an ounce, so you won't notice it's there. The design works equally well from either side, making it truly ambidextrous whether you're left- or right-eye dominant.

This is the kind of accessory that seems simple until you realize how many other shooters are cleaning their lenses in the field or dealing with fogged optics. Once you run a Butler Creek cover, you'll wonder how you hunted without one. Size 45 is the right fit for 61.20mm objectives—refer to the sizing chart to confirm before ordering.

Key Features

• Quick flip-open design keeps both hands on your rifle until the moment you need to shoot
• Silent spring hinges won't spook game in critical moments
• Water-tight and air-tight semi-O-ring seal protects against dust, moisture, and weather
• Friction-mount design grips securely without tools or permanent modification
• Weighs less than an ounce—negligible impact on your setup
• Ambidextrous operation for left- or right-handed shooters
• Tested to operate reliably at –40°F
• Custom-fit to 61.20mm objective lenses (Size 45)

Specifications

Frequently Asked Questions

Will this cover fit my scope?

This is a Size 45 cover designed for 61.20mm objective lenses. If you're not sure of your scope's objective diameter, refer to the Butler Creek sizing chart or measure your front lens. Using the correct size ensures a snug, reliable fit.

Does the cover attach permanently to my scope?

No. The Butler Creek uses a friction-mount design that grips your scope without tools, screws, or adhesive. It stays put during normal use but can be removed and reused on another scope if needed.

Will the cover slow me down when I need to take a shot?

Not at all. The flip-open design is one-handed and silent—a quick thumb motion opens it without any fumbling or noise that could spook game. It's engineered for speed when it counts.

Is this cover ambidextrous?

Yes. The Butler Creek Size 45 flip-open cover works equally well for left- or right-handed shooters and left- or right-eye dominant hunters.