Butler Creek Flip-Open Objective Lens Cover, Black Polymer, 27.80mm (Size 04)
Butler Creek
A quality scope cover is one of the easiest ways to protect your optics in the field. The Butler Creek 30510 flip-open objective lens cover is a purpose-built protection solution sized for scopes with a 65.40mm objective bell. Designed for hunters and shooters who need fast, silent access to their glass without fussing with separate caps or fumbling in the moment, this objective cover opens with a quick thumb flip and locks open with spring hinges that operate without noise—critical when every second and every sound matters.
The cover's design centers on practical field use. Its friction-mount system anchors securely to your scope tube with a semi-O-ring seal that keeps dust, moisture, and debris out when closed. That seal is tested to withstand cold to –40°F, so it won't fail in late-season hunts or winter range sessions. The polymer construction weighs less than an ounce, adding virtually nothing to your rig's overall burden, and the truly ambidextrous flip mechanism works equally well whether you're left- or right-handed.
Size 51 is a specific fit—the Butler Creek sizing system ensures a custom-fit seal rather than a loose, rattling cover. Check the manufacturer's size chart to confirm this 65.40mm cover matches your scope's objective diameter before ordering. Once you've got the right fit, this becomes one of those small investments that quietly extends the life of a quality optic, trip after trip.