The Butler Creek Flip Open 13 Objective (MPN: 30130 / BC30130) is a passive, mechanical riflescope lens cover engineered to shield objective glass from dust, rain, mud, and abrasion. Featuring a friction-fit flexible collar, it attaches directly to the front scope bell with a nominal outer diameter of 1.530 inches (38.9 mm). Dual ambidextrous push-tabs trigger a spring-loaded quick-deploy mechanism with an internal silent hinge, allowing hunters to open the cap instantly with minimal movement and no loud snapping sounds. Weighing less than 1.0 oz (< 28.3 g), it adds virtually no weight to a hunting setup while maintaining an airtight and watertight semi-O-ring seal across broad environmental extremes.

Key Features

• Spring-Loaded Flip-Open Action: Dual push-tabs flip the protective lid up instantly under light thumb pressure for rapid target engagement.
• Silent Internal Hinge: Eliminates clicking and snapping noises when opened, preventing game from being spooked at close range.
• Environmental Protection: Creates an airtight, watertight friction seal against fine dust, rain, snow, and mud.
• Extreme Temperature Function: Operates reliably across an envelope of -40°C to 48.9°C (-40°F to 120°F) without cracking or warping.
• Lightweight Construction: Rugged matte black polymer housing adds less than 1.0 oz (< 28.3 g) to the firearm.

Product Specifications

• Product Name: Butler Creek Flip-Open Objective Scope Cover – Size 13
• Manufacturer Part Number: 30130 / BC30130
• Nominal Fitting Diameter: 1.530 in (38.9 mm)
• Compatible Scope Bell Fit Window: 1.520 in to 1.555 in (38.65 mm to 39.54 mm)
• Operating Temperature Range: -40°C to 48.9°C (-40°F to 120°F)
• Mounting Mechanism: Slip-on friction collar with semi-O-ring seal
• Weight: Less than 1.0 oz (< 28.3 g)
• Power Requirements: None (fully mechanical)

Who is the Butler Creek Flip Open 13 Objective for?

• Big game hunters operating in dusty or wet environments — relies on a watertight semi-O-ring friction seal functioning across -40°C to 48.9°C to keep fine dirt and moisture off objective lenses without shifting rifle balance during all-day carry, adding under 1.0 oz (< 28.3 g) to the rifle setup.
• Varmint control shooters requiring silent, quick-deploy optics protection — utilises an ambidextrous silent-hinge spring mechanism fitted specifically to objective bells measuring between 38.65 mm and 39.54 mm (1.520 in to 1.555 in), enabling instantaneous, noiseless flip-to-fire target acquisition from a seated or prone position.

Less suitable for: Riflescope objective bells measuring under 1.520 in (38.65 mm) or over 1.555 in (39.54 mm), which require an alternatively sized Butler Creek objective cap to maintain proper friction retention; or optic ocular lenses, which require a dedicated push-button eyepiece series scope cover.