Butler Creek Flip-Open Eyepiece Scope Cover, Size 01, 1.34 in.

The Butler Creek Flip-Open Eyepiece Scope Cover (Butler Creek part no. MO20010) is a Size 01 eyepiece cover custom fit to scopes with a 1.34-inch (34.10mm) 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 01 fit-chart listing, sized to a 1.34-inch (34.10mm) opening.
• Custom fit for a 1.34-inch (34.10mm) 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 0.05 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

How do I know this is the right size for my scope? Butler Creek lists it as Size 01, built specifically for a 1.34-inch (34.10mm) opening on the eyepiece.

Does the cover make noise when it opens? No, Butler Creek built the hinge to operate silently, which matters when you’re glassing game at close range.

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 01, 1.34 in.

Keeping a scope’s glass clean and dry between shots is a small detail that pays off the moment weather turns, and this Size 01 Flip-Open cover handles it without adding bulk. 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.