Butler Creek Flip-Open Eyepiece Cover, Size 15, Black Polymer, 1.66x1.45"/42.20mm (Model 20150)

A Butler Creek Flip-Open Eyepiece Cover, Size 15 protects one of the most critical parts of your rifle scope—the rear lens—from mud, rain, dust, and brush during hunts and range sessions. This black polymer cover is sized to fit eyepieces measuring 1.66 inches by 1.45 inches (42.20mm), and its spring-loaded flip design means you can snap it open instantly with one finger when you're ready to shoot, without fumbling or removing your grip from the rifle. If you're running an optic in the field, a quality eyepiece cover is simple insurance against the elements and impacts that degrade glass and coatings over time.

Butler Creek covers are engineered to keep weathering—moisture, dust, and salt spray—away from the lens surface without compromising access when seconds matter. The polymer construction is durable and light enough that you'll forget it's there until a branch or rainstorm reminds you why it's worth carrying. Because eyepiece and objective covers are sold separately, you can tailor protection to your setup; many shooters prefer covering the rear lens while leaving the objective clear for quick target acquisition.

If you're equipping a new scope, upgrading a hunting rifle, or filling gaps in your optics kit, measure your eyepiece diameter carefully before ordering—Butler Creek offers multiple sizes, and Model 20150 is the right choice only if your eyepiece measures 1.66×1.45 inches. A proper fit ensures the cover stays in place during recoil and movement and operates smoothly when you need it.

Key Features

• Spring-loaded flip design opens with a single finger press
• Weatherproof and dust-proof black polymer construction
• Fits eyepieces measuring 1.66 inches by 1.45 inches (42.20mm)
• Stays clear of your sight picture and handling when opened
• Lightweight and durable for field use

Specifications

Frequently Asked Questions

Will this cover fit my scope's eyepiece?

Only if your eyepiece measures 1.66 inches by 1.45 inches (42.20mm). Measure the diameter of your eyepiece carefully before ordering, as Butler Creek covers come in multiple sizes, and a mismatch will affect fit and operation.

Is this cover also for the objective lens?

No—this is an eyepiece (rear lens) cover only. If you want to protect your objective lens as well, Butler Creek objective covers are sold separately.

Does the cover stay attached when I flip it open?

Yes. The spring-loaded hinge flips the cover open and out of the way, and it remains tethered so you don't lose it in the field.