Butler Creek Element Scope Cap Eye Piece 37-42mm - Rugged Modular

In this review the Butler Creek Element Scope Cap Eye Piece is examined as a practical lens-protection accessory for hunters and shooters who need modular, weather-ready coverage for mid-size scopes. The single biggest reason to consider it is the interchangeable lens system that lets a user switch between a light-blocking disk, a clear rain-ready disk and a data disk for ballistic reference, delivering flexible protection across varied conditions while remaining a compact, multi-fit solution.

Key Features

• Modular lenses: Includes three disks so you can block direct sunlight, keep the reticle visible in rain, or carry simple caliber-specific data while the cap is closed.
• Multi-fit sleeve: A rubber stretchable sleeve fits scopes from 37 to 42 mm, allowing the same cap to be used on a range of optics without custom adapters.
• Rugged lid design: The ridged polymer protective lid resists everyday abuse and helps shed water and debris on the trail.
• Temperature tolerant construction: Built to survive heat and cold so the cap remains usable in varied climates and seasons.
• Inline cap layout: The small footprint and 10 total caps in line let you cover most scope positions without complex mounting changes.

Who It's For

The Element Scope Cap Eye Piece suits hunters, range shooters, and outdoorsmen who want a practical, switchable scope cover that adapts to sun, rain, and quick-reference needs. Its multi-fit rubber sleeve makes it a good option for those who own several rifles or who like to move optics between platforms.

Those who prioritize a locking, foolproof closure system or need an ultra-rigid metal cover for extreme abuse should look elsewhere, because some users report the caps do not always remain tightly closed and the polymer can become brittle in very cold conditions.

Pros & Cons

Pros

• Interchangeable disk options provide functional versatility for different weather and lighting.
• Good fit across 37-42 mm scopes thanks to the stretchable rubber sleeve.
• Solid build quality for routine field use with a rugged ridged lid that sheds debris.

Cons

• Some users report the caps may not stay locked shut reliably under all conditions.
• The polymer can feel brittle in extreme cold, which may affect long-term durability.

Specifications

Product	Element Scope Cap Eye Piece
Fit diameter	37-42 mm
Color	Black
Included lenses	Black disk, clear disk, data disk
Material	Ridged polymer lid with rubber sleeve
Design	SM 37-42 mm multi-fit, 10 caps in line
Intended use	Scope lens protection in varied weather

Our Verdict

The Butler Creek Element Scope Cap Eye Piece is a practical, value-minded accessory for shooters who want modular weather protection and a multi-fit mounting option. It is best for those who value versatility and convenience; buyers who need a guaranteed locking closure or metal construction for extreme conditions should consider alternatives.

Frequently Asked Questions

Can the cap fit other scope sizes?
The supplied rubber stretch sleeve is designed for 37-42 mm scopes and will accommodate most optics within that range.

What are the included disk functions?
It ships with a black disk to reduce direct sunlight, a clear disk to see the reticle in rain, and a data disk for caliber or ballistic reference.

Is the cap durable in cold weather?
The polymer lid is rugged for routine use, but some users report it can become brittle in extreme cold, so handle with care in very low temperatures.