Butler Creek 30390 Flip-Open Objective Scope Cover 56.40mm Size 39

The Butler Creek 30390 Flip-Open Objective Scope Cover protects valuable optics from debris, moisture, and impact damage while maintaining instant access when it matters most. This polymer scope cover fits 56.40mm objective lenses with a secure spring-loaded design that won't accidentally open during transport or field use.

What Makes This Different

Unlike basic lens caps that fall off or get lost, this flip-open design stays permanently attached to the scope. The hinged construction allows one-handed operation while maintaining a weatherproof seal when closed. The precision-molded polymer construction resists cracking in extreme temperatures from -40°F to 160°F, outperforming cheaper alternatives that become brittle in cold conditions.

Key Features

• Fits 56.40mm objective lenses with secure spring-loaded retention system
• One-handed flip-open operation for instant target acquisition
• Durable black polymer construction resists UV degradation and impact
• Weatherproof seal protects against rain, snow, and dust infiltration
• Permanent attachment eliminates lost lens caps in the field
• Low-profile design won't snag on vegetation or gear
• Compatible with most riflescopes featuring 56.40mm objective diameter

Field performance remains consistent across hunting, tactical, and competitive shooting applications. The cover's smooth hinge action operates silently, crucial for hunting situations where noise discipline matters. Temperature extremes won't affect the spring tension or hinge movement, ensuring reliable function whether stalking game in sub-zero conditions or competing in desert heat. The polymer material won't reflect light or create glare that could compromise concealment.

Technical Specs

• Objective lens diameter: 56.40mm (Size 39)
• Material: High-impact black polymer
• Operating temperature: -40°F to 160°F
• Attachment method: Spring-loaded retention ring
• Weight: Approximately 0.5 oz
• Finish: Non-reflective matte black
• Country of origin: USA
• Model number: 30390

This scope cover represents proven protection technology that extends optic lifespan while maintaining tactical readiness. The Size 39 designation ensures proper fit for 56.40mm objectives, eliminating guesswork during selection. Professional shooters and hunters rely on Butler Creek covers because lens replacement costs far exceed this simple preventive measure.