Butler Creek Flip-Open Eyepiece Scope Cover, Size 20, 1.77 in.

The Butler Creek Flip-Open Eyepiece Scope Cover (Butler Creek part no. MO20200) is a Size 20 eyepiece cover custom fit to scopes with a 1.77-inch (45.10mm) opening, built to shield the glass between shots. Butler Creek molds this cover from tough black polymer and shapes it to snap open with a single touch of the thumb, so you’re never fumbling with a cap when a shot presents itself. A watertight, airtight seal keeps rain, snow, and trail dust off the lens until the moment you need a clear sight picture, and the hinge stays silent so the cover doesn’t spook game or draw attention on a stalk. It’s a simple, purpose-built way to protect a scope that sees real field use.

Key Specifications

• Molded as Butler Creek’s Size 20 fit-chart listing, sized to a 1.77-inch (45.10mm) opening.
• Custom fit for a 1.77-inch (45.10mm) eyepiece, matching the scope’s own measurement rather than a generic universal size.
• Molded from black polymer for a durable, lightweight cover that won’t rust or corrode.
• Uses a slip-on mounting style, no tools or adhesive needed to install or remove it.
• Forms a watertight, airtight seal over the eyepiece, keeping rain, snow, and dust off the glass.
• Opens with a single touch of the thumb via a spring-loaded, flip-open lid.
• The hinge operates silently, so opening the cover won’t spook game or give away your position.
• Ships at a featherlight 0.0625 lb, adding almost nothing to a scope’s overall weight.
• Cold-weather tested to -40 degrees F, holding up through genuine winter field conditions.
• The lid opens via an ergonomic, non-slip button, built for fast one-touch access even with gloves on.

Frequently Asked Questions

Will this fit any scope with a similar-sized lens? It’s molded to Butler Creek’s Size 20 fit chart for a 1.77-inch (45.10mm) opening, so match your scope’s measurement to that figure before ordering.

Can I open it quickly when a shot presents itself? Yes, one touch of the thumb flips the lid open instantly, and the silent hinge won’t spook game or give away your position.

Does the cover seal out moisture? Yes, it forms a watertight, airtight seal over the eyepiece and has been tested to -40 degrees F for cold-weather reliability.

Buy the Butler Creek Flip-Open Eyepiece Scope Cover, Size 20, 1.77 in.

A scope left uncovered in the truck or the field picks up dust and moisture fast, and this Butler Creek cover is built to stop that before it starts. Order it from our Butler Creek lineup, part of our full selection of scope accessories and parts, from our Lubbock, Texas gun shop, and it ships fast to your door.