A Butler Creek flip scope cover for 31mm objective lenses keeps your optics protected from the elements without slowing you down when the moment arrives. Designed for hunters and shooters who need reliable lens protection in the field, this cover seals out water, dust, and moisture while staying light enough that you'll barely notice it on your rifle. The flip-open design lets you transition from protected to ready in a single motion, no fumbling, no noise.

These covers mount directly to your scope using a custom-fit friction system that holds securely but releases smoothly when you need it. The semi-O-ring seal creates an air-tight, water-tight barrier without being so tight that it becomes a hassle to use. Spring hinges operate silently, so you won't spook game or give away your position. Built to handle extreme conditions—tested down to –40°F—the cover works whether you're hunting in mountain snow or desert heat.

At under an ounce, the Butler Creek flip cover adds virtually no weight to your setup. The ambidextrous design works the same way whether you shoot right- or left-handed, and there's no fumbling to figure out which way to open it. This is the kind of accessory that disappears into your routine: put it on, forget about it, flip it off when you glass. Matching the right size to your scope is the only consideration—refer to the size chart to ensure you get the 31mm version that fits your objective lens.