The Butler Creek Multiflex Flip-Open Scope Cover – Objective Lens (Size 13–15) (MPN: 31315) is a mechanical lens protection accessory designed to shield rifle scope objective lenses from dirt, rain, and field abrasion. Built with a flexible polymer slip-on collar, it accommodates slight outer diameter variations across standard scope bells spanning Butler Creek sizes 13 through 15. The spring-loaded lid deploys instantly and quietly with a thumb press, allowing hunters and shooters to acquire targets rapidly while keeping glass sealed against fine dust, red sand, and moisture until the moment of shooting.

Key Features

• Multi-Flex Polymer Collar: Flexible elastomer sleeve stretches to create an airtight and watertight friction seal over scope objective bells.
• Instant-Action Spring Mechanism: Spring-loaded rigid lid opens silently at the flick of a thumb for immediate sight picture access.
• Mechanical Operation: Fully non-powered mechanical construction requires no batteries and functions across rimfire to magnum centerfire calibres.
• Field Protection: Guards optical glass against rainstorms, mud, abrasive scrub, and pervasive Australian outback dust.
• Finish: Matte black non-reflective finish designed for hunting and field tactical use.

Product Specifications

• Model / MPN: 31315
• Cover Type: Flip-open objective lens cover
• Fitment Range (Objective Bell Outer Diameter): 1.530 inches to 1.558 inches (38.86 mm to 39.57 mm)
• Attachment Method: Slip-on flexible collar
• Material: Flexible polymer/elastomer collar with rigid polymer lid
• Weight: Approximately 20 g to 30 g

Who is the Butler Creek Multiflex Flip Open 13-15 Objective for?

• Hunters navigating outback and bushland terrain — requires a flip-open rifle scope objective cover that creates an airtight friction seal over bells measuring 38.86 mm to 39.57 mm (1.530 inches to 1.558 inches) to prevent fine red sand, scrub abrasion, and rain from reaching optical glass during stalks.
• Precision rifle shooters in dusty or wet environments — requires a scope objective cover engineered to fit outer bell diameters between 1.530 inches and 1.558 inches (38.86 mm to 39.57 mm) that opens instantly via a spring-loaded lid without losing target alignment on the firing line.

Less suitable for: Rifle scopes with an objective bell outer diameter smaller than 1.530 inches (38.86 mm) or larger than 1.558 inches (39.57 mm), which require alternative-sized Multiflex objective covers engineered for smaller or larger bell dimensions.