Butler Creek Flip-Open Eyepiece Cover, Size 19 (1.73"/43.90mm), Black Polymer

Keep your scope's objective lens clear and protected from the elements with the Butler Creek Flip-Open Eyepiece Cover, Size 19. This is the solution serious hunters and long-range shooters rely on when conditions turn nasty—rain, snow, dust, or temperature swings that would compromise your optics. Unlike lens caps that sit in a pack or get dropped in the field, this eyepiece cover stays mounted to your scope and flips open in a single thumb motion when you're ready to take your shot. No fumbling, no delay, no distraction.

The design is built around speed and silence. Custom-fit friction mounts grip your scope securely without tools, while a semi-O-ring seal keeps moisture and dust out when closed. The flip mechanism uses spring hinges engineered to operate quietly—critical when you're glassing a ridge or waiting for game to step into your window. At less than an ounce, it adds negligible weight to your rifle, yet provides the kind of protection that keeps your glass clean and your sight picture clear when it matters most.

Size 19 is engineered for eyepieces measuring 1.73 inches (43.90mm) in diameter, so verify your scope's specs before ordering. Tested to withstand extreme cold down to –40°F, these covers work equally well whether you're hunting in your region or pursuing game across varied terrain and climates. The ambidextrous design works for lefties and righties without modification.

Key Features

• Fast flip-open design—thumb-activated, no cap to lose
• Silent spring hinges won't spook game or alert other hunters
• Custom friction mount stays secure without tools
• Semi-O-ring seal blocks dust and moisture
• Tested to –40°F in extreme conditions
• Weighs less than one ounce
• Fits eyepieces 1.73" (43.90mm) diameter
• Truly ambidextrous for any shooter
• Black polymer construction

Specifications

Frequently Asked Questions

How do I know what size eyepiece cover I need?

Measure your scope's eyepiece (ocular lens) diameter or check your scope manual. Size 19 fits eyepieces that are 1.73 inches (43.90mm) in diameter. Installing the wrong size will result in a poor fit and inadequate protection.

Will this cover work on my hunting scope or long-range rig?

Yes. Butler Creek eyepiece covers are designed for hunting and shooting applications where you need quick access and quiet operation. They work on any rifle scope with the correct eyepiece diameter.

Does the flip mechanism require any tools to install?

No. The custom friction mount adheres to your scope without tools, tape, or adhesive. It's designed to be secure yet removable if you ever need to take it off.

Is this cover weatherproof?

The semi-O-ring seal and friction mount create a water-tight, air-tight barrier when closed, keeping dust and moisture away from your lens. It's tested to function in extreme cold (–40°F) and harsh field conditions.