Butler Creek Flip-Open Eyepiece Scope Cover - 1.700"/43.2mm MFG 20180 Size 18

The Butler Creek Flip-Open Eyepiece Scope Cover in Size 18 (1.700"/43.2mm) is a custom-fit lens protection system designed for hunters and shooters who demand reliability in unpredictable field conditions. Built to seal out moisture and dust while remaining instantly accessible, this flip-open eyepiece cover enables rapid target acquisition without removing lens protection—a critical advantage when game appears in a narrow window of opportunity.

The design features a friction-mount system that anchors securely to the scope turret with zero additional hardware required. The semi-O-ring seal creates an air-tight and water-tight barrier, protecting optical coatings from condensation, rain, and environmental contamination during extended field use. The silent spring-loaded hinge mechanism opens with thumb pressure and closes smoothly without metal-on-metal noise—essential for maintaining stealth in hunting situations where even minor sound carries across valleys or through timber. The compact footprint (2.8 x 1.55 x 4.85 inches) and lightweight construction (0.06 lbs) add negligible bulk to your riflescope setup.

This Size 18 cover is engineered specifically for scopes with 1.700-inch objective lens diameters, ensuring the friction fit remains consistent through repeated opening cycles and across temperature variations. The model is ideal for hunters using mid-range magnification scopes on rifle platforms from .223 to larger calibers, where objective size typically falls in this range. Long-range precision shooters, backcountry hunters, and sportsmen operating in wet or dusty environments will find this cover particularly valuable for protecting expensive optical investment during transport and deployment.