Butler Creek Flip-Open Eyepiece Scope Cover - 1.3"/33mm MFG 20030 Size 03A

The Butler Creek Flip-Open Eyepiece Scope Cover in 1.3"/33mm (MFG 20030 Size 03A) is a purpose-built lens protection system designed for precision rifle optics where environmental sealing and rapid access are mission-critical. This flip-open eyepiece cover combines watertight and airtight design with a thumb-operated opening mechanism, allowing shooters to deploy or stow lens protection without removing their shooting grip or shifting sight picture.

The 1.3-inch (33mm) bore specification is precisely fitted to match common mid-magnification rifle scope eyepieces, ensuring a secure seal that prevents dust, moisture, and debris infiltration during storage, transit, and field deployment. Butler Creek's flip-open design—activated by a single flick of the thumb—eliminates the friction and fumbling associated with traditional fixed lens caps, reducing the time between observation and engagement. The compact profile adds negligible weight (0.04 lbs) and no measurable length to the optic assembly, maintaining balance and handling characteristics across supported rifle platforms.

This eyepiece cover serves rifle shooters operating in humid, coastal, or dusty environments where lens degradation from salt spray, sand ingress, or moisture accumulation directly compromises optical clarity and zero stability. Law enforcement precision rifle teams, military designated marksmen, and tactical precision hunters benefit from the rapid-access design during extended observation periods or fast-break scenarios. The watertight construction is particularly valuable during amphibious training, maritime operations, or multi-day field courses where scopes experience temperature cycling and precipitation exposure without protective cases.

Butler Creek's modular approach to scope protection—offering 30+ eyepiece and objective sizes—allows operators to standardize on a single protection philosophy across multiple rifle systems. When paired with matching objective covers, this eyepiece cap delivers complete optical sealing without the bulk of removable lens caps.