Butler Creek 30230 Flip-Open Objective Lens Cover, Black Polymer, 44.70mm Size 23

The Butler Creek Size 23 flip-open objective lens cover is a black polymer lens protector engineered for hunters and shooters who need fast, silent access to their optics in the field. Sized at 44.70mm to fit specific scope models, this objective cover uses a spring-hinged design that lets you flip it open with your thumb—no hands fumbling with separate caps or covers when game is in range. The custom-fit friction mount holds securely to your scope without tools, and the semi-O-ring seal locks out dust, moisture, and weather between shots.

If you run your rig in tough conditions—wet mornings, dusty terrain, extreme cold—this cover keeps your objective lens clean and dry. The design is truly ambidextrous, so it works whether you shoot right or left-handed. At less than an ounce, it adds virtually no weight or bulk to your setup, and the quiet spring hinges won't spook game when you deploy it. Butler Creek tested this cover down to –40°F, so temperature extremes won't affect the seal or operation.

Installation is straightforward: the friction mount grips your scope's objective bell without permanent modification. Just confirm the Size 23 designation (44.70mm) matches your scope before ordering—Butler Creek publishes a detailed size chart to help you pick the right fit. Once mounted, the cover stays put until you need it, then opens silently and instantly when opportunity shows.

Key Features

• Spring-hinged flip-open design—quick access under pressure
• Black polymer construction—durable and lightweight
• Custom-fit friction mount—no permanent modifications or tools required
• Semi-O-ring seal—blocks dust, moisture, and air infiltration
• Silent spring hinges—won't spook game when you flip it open
• Ambidextrous operation—works for any shooting hand
• Tested to –40°F—reliable in extreme cold
• Weighs less than one ounce—minimal added weight

Specifications

Frequently Asked Questions

How do I know if Size 23 will fit my scope?

Butler Creek sizes their objective lens covers by objective diameter. The Size 23 cover is designed for 44.70mm objectives. Check your scope's specifications or refer to Butler Creek's size chart to confirm the right size for your optic before purchasing.

Will this cover stay on while I'm hunting, or does it fall off easily?

The custom-fit friction mount is designed to anchor the cover securely to your scope. It stays in place until you flip it open with your thumb. The semi-O-ring seal helps keep it seated.

Can I use this cover if I'm left-handed?

Yes. The Butler Creek Size 23 flip-open cover is truly ambidextrous, so it works equally well for right-handed and left-handed shooters.

Does this cover keep moisture out?

Yes. The semi-O-ring seal creates an air-tight, water-tight barrier that keeps dust and moisture off your objective lens when the cover is closed. This protection is maintained even in wet or humid conditions.