Butler Creek Flip-Open Eyepiece Cover Size 05 (1.43"/36.40mm) - Black Polymer

Keep your scope's eyepiece protected with the Butler Creek Flip-Open Eyepiece Cover Size 05, a simple but effective defense against dust, moisture, and weather damage that can degrade your optics during hunting, range sessions, or field use. This cover fits eyepieces with a 1.43-inch (36.40mm) diameter, and its spring-loaded flip design lets you snap it open with a single finger flick—no fumbling, no delay when you need to get behind your glass fast. Black polymer construction is tough and lightweight, designed to stay out of your way once deployed.

Whether you're running a bolt-action hunting rifle, an AR-pattern rifle at the range, or any scope in between, keeping your optics clean and dry is fundamental to reliable accuracy. Dust and moisture creep in during backcountry hunts, rainy outings, and storage between seasons. A flip-open cover takes seconds to install and removes a real source of frustration—fogged lenses or grit on the glass when you need to take the shot. This is the kind of small, unglamorous gear that saves your expensive scope.

Butler Creek's flip covers are the standard recommendation for a reason: they work, they're affordable, and they're proven in the field. If your scope's eyepiece diameter is 1.43 inches or 36.40mm, this Size 05 is your match. Measure your eyepiece barrel to confirm fit; objective covers are sold separately if you need full front-and-back protection.

Key Features

• Spring-loaded flip design opens with light finger pressure
• Fits 1.43-inch (36.40mm) diameter eyepieces
• Black polymer construction—tough and corrosion-resistant
• Stays tethered and out of the way once open
• Lightweight and compact—no bulk or weight penalty

Specifications

Frequently Asked Questions

How do I know if Size 05 fits my scope?

Measure the diameter of your scope's eyepiece barrel. Size 05 covers eyepieces that are 1.43 inches or 36.40mm in diameter. If your eyepiece is a different size, measure and check the size chart to find the right Butler Creek cover.

Do I need a separate objective lens cover?

This product is an eyepiece cover only. Objective lens covers are sold separately. If you want full front-and-back protection for your scope, you'll need to order both the eyepiece and objective covers that match your optic's diameter.

Can I use this cover while the scope is mounted on my rifle?

Yes. The flip-open design is meant to stay attached to your scope. Once you flip it open, it stays out of the way and doesn't interfere with your sight picture or shooting.

What's the best way to keep my scope lenses clean during storage?

A flip cover protects your eyepiece from dust and moisture during storage and between hunting seasons. For objective-end protection, pair this eyepiece cover with a matching objective cover, also sized to your scope's barrel diameter.