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Vortex Defender Flip Cap - Objective Lens O-50 (55-59 mm)
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$29.99
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SKU: 0-50-875874005891
Overview
Designed for protecting the objective end of a compatible rifle scope, this flip-up cover offers a simple way to keep the lens covered when the optic is not in use. Its snap-flat spring design helps the cap stay out of the way when you need a clear sight picture, making it a practical choice for hunters who want quick access without removing a cover entirely. The polymer construction is intended for hard use, while the snug fit is aimed at broad compatibility with many Vortex Optics models. This is the objective cover only, so it is best suited for shooters who already know their scope’s objective size and want a straightforward protective solution.
Why Hunters Choose the Vortex
Objective Lens
Cover designed for Vortex Optics
Fits Objective
Lenses in the 55-59 mm
Snap-flat Spring
Helps keep the line of
Made From
Polymer construction
Objective Cover
Only for a focused, simple
Key Features
- Objective lens cover for Vortex Optics scopes, size O-50 (55-59 mm).
- Made from polymer construction.
- Flip-up design helps keep the line of sight unobstructed.
- Snug fit on nearly all Vortex Optics models.
- Objective cover only; intended for the objective lens.
Best Used For
- Hunters using compatible Vortex optics who want an objective lens cover only
- Shooters needing a flip-up cap that stays out of the line of sight
- Field users looking for a snug-fitting cover for nearly all Vortex optics
- Anyone replacing a worn objective cover with a simple, low-profile option
Specifications
| Compatibility | Nearly all Vortex Optics |
|---|---|
| Includes | Objective cover only |
| Material | Polymer |
| Objective Lens Size | O-50 (55-59 mm) |
| Spring Type | Snap flat spring |
| Type | Objective cover |
Pros
- Objective lens cover designed for Vortex Optics scopes
- Fits objective lenses in the 55-59 mm range
- Snap-flat spring helps keep the line of sight unobstructed
- Made from polymer construction
- Objective cover only for a focused, simple setup
Considerations & Trade-offs
- Objective cover only; it does not include an eyepiece cover, so it addresses just one end of the optic.
- Fit is specified for the O-50 size range (55–59 mm), so confirming your scope’s objective diameter is important before ordering.
- Designed to fit nearly all Vortex Optics, but compatibility still depends on the exact objective size and scope setup.
- The snap-flat spring keeps the cap out of the line of sight when open, which is useful, but it also means the cap is built around a flip-up profile rather than a low-profile fixed cover.
Suggested Comparisons
- Rifle scope lens covers
- Rifle scope accessories
- Optics protection accessories
Suggested Accessories
- Scope cover
- Lens cleaning cloth
- Optics cleaning kit
- Protective scope accessories
Frequently Asked Questions
What does the Defender Flip Cap O-50 cover fit on?
It is an objective lens cover sized O-50, listed for 55-59 mm objective lenses.
Is this a complete scope cover set or only one part?
This is the objective cover only.
What material is the flip cap made from?
The product description says it is made from a virtually indestructible polymer.
Will the cap stay out of the way when open?
The description says it features a snap flat spring that keeps your line of sight unobstructed.
Which optics is this intended for?
It is described as fitting snugly on nearly all Vortex Optics, but the source does not list specific models.