Leupold 56187 Alumina Lens Cover 40mm Objective 2.5" Screw-On

The Leupold 56187 Pro Gear Alumina lens cover provides superior protection for 40mm objective lenses with its precision-engineered aluminum construction. This screw-on design ensures secure attachment while maintaining quick access when transitioning from storage to shooting position.

What Makes This Different

Unlike standard plastic lens covers that crack in cold weather or warp under heat, this aluminum cover maintains structural integrity across temperature extremes from -40°F to 160°F. The Alumina coating process creates a harder surface than standard anodizing, providing enhanced scratch resistance and corrosion protection. The threaded attachment system eliminates the common failure points found in flip-up or snap-on covers.

Key Features

• Precision-machined aluminum construction with Alumina protective coating
• 40mm objective lens diameter compatibility with 2.50-inch length
• Secure screw-on threading prevents accidental loss during transport
• Matte black finish reduces glare and maintains low-profile appearance
• Compatible with Leupold VX-3, VX-3i, and VX-5HD riflescope models
• Lightweight design adds minimal weight to optic setup
• Weather-sealed construction protects against moisture infiltration

Field performance remains consistent whether mounted on a hunting rifle traversing rough terrain or a precision rifle system in competitive shooting environments. The aluminum construction resists impact damage from branches, case contact, or accidental drops that would compromise lesser materials. The secure threading system allows for confident transport without concern for cover separation, while the smooth operation enables rapid removal when target acquisition becomes necessary.

Technical Specs

• Objective lens diameter: 40mm
• Overall length: 2.50 inches
• Material: Aircraft-grade aluminum with Alumina coating
• Finish: Matte black anodized
• Attachment method: Threaded screw-on design
• Weight: Approximately 0.8 ounces
• Temperature rating: -40°F to 160°F operational range
• Manufacturer: Leupold & Stevens, USA

This lens cover represents the intersection of practical field requirements and precision manufacturing standards. The investment in quality protection extends the operational life of expensive optical equipment while maintaining the reliability demanded by serious shooters.