Butler Creek 30400 Flip-Open Objective Scope Cover 57.2mm Size 40

The Butler Creek 30400 flip-open objective scope cover provides instant lens protection with silent, one-handed operation for riflescopes with 57.2mm objective lenses. This polymer cover eliminates the fumbling and potential loss associated with traditional screw-on caps while maintaining complete optical clarity when deployed.

What Makes This Different

Unlike rigid caps that require removal and storage, this flip-open design stays attached to the scope through a flexible hinge system. The cover opens with a simple thumb press and locks securely in the open position, preventing interference with the sight picture. Butler Creek's proprietary polymer blend resists impact damage and temperature extremes that can crack lesser materials.

Key Features

• Silent flip-open operation eliminates noise during deployment
• Precision-molded for 57.2mm objective lenses (Size 40 designation)
• Durable black polymer construction resists UV degradation
• Secure snap-fit installation requires no tools or modifications
• Low-profile design clears most scope rings and mounts
• Tethered design prevents loss in field conditions
• Compatible with variable and fixed power riflescopes

Field performance centers on reliability across temperature ranges from -40°F to 160°F without becoming brittle or soft. The cover maintains positive retention in hunting conditions, tactical applications, and competitive shooting environments. Rain, snow, and debris protection keeps objective lenses clean during transport and storage.

Technical Specs

• Objective lens diameter: 57.2mm (Size 40)
• Material: High-impact polymer composite
• Color: Matte black finish
• Weight: 0.3 ounces
• Installation: Tool-free snap-fit mounting
• Operating temperature: -40°F to 160°F
• Country of origin: United States

Professional shooters and hunters choose Butler Creek covers for their proven track record in demanding conditions. The 30400 model specifically addresses the needs of medium to large objective scopes where lens protection directly impacts equipment longevity and shooting success.