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Vortex Defender Flip Cap Set Objective 40
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$29.99
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SKU: WX2*0718790
Overview
A practical lens cover for hunters and shooters who want quick protection without adding clutter to the sight picture. It is designed to fit securely on optics with an outside diameter of 45.5–48.5 mm, using a flexible rubber sleeve for a snug hold. The snap-flat spring is made to stay out of the way when the cap is open, and the dual opening tabs make it easy to lift and close with minimal fuss.
Why Hunters Choose the Vortex
Snap-flat Spring
Stays out of the line
Fits Optics
Outside diameters from 45.5 to
Flexible Rubber
Sleeve helps create a snug
Smooth Flip-up
Design is easy to clip
Dual Opening
Tabs provide easier access in
Key Features
- Objective lens flip cap for 40mm optics
- Fits optics with 45.5-48.5mm outside diameter
- Snap-flat spring helps avoid obstructing your line of sight
- Flexible rubber sleeve creates a snug fit over the scope
- Smooth flip-up design clips back down easily
- Dual opening tabs provide easy access
Best Used For
- Hunters wanting quick objective-lens protection without blocking their sight picture
- Field users needing a secure fit on optics with 45.5-48.5mm outside diameter
- Anyone who prefers easy flip-up access for frequent glassing and adjustments
- Hunters carrying optics where a low-profile cap helps keep the line of sight clear
Specifications
| Dual Opening Tabs | Yes |
|---|---|
| Easy To Clip Back Down | Yes |
| Fits Outside Diameter | 45.5-48.5mm |
| Flexible Rubber Sleeve | Yes |
| Objective Lens Size | 40 |
| Product Type | Flip Cap Set |
| Smooth Flip Up | Yes |
| Snap Flat Spring | Yes |
Pros
- Snap-flat spring stays out of the line of sight when open.
- Fits optics with outside diameters from 45.5 to 48.5mm.
- Flexible rubber sleeve helps create a snug scope fit.
- Smooth flip-up design is easy to clip back down.
- Dual opening tabs provide easier access in the field.
Considerations & Trade-offs
- Fit is limited to optics with an outside diameter of 45.5–48.5 mm, so compatibility should be checked before purchase.
- The flexible rubber sleeve is designed for a snug fit, which may require a bit of effort to install or remove compared with a looser cap.
- The snap-flat spring is intended to stay out of the sight line, but the flip-up design still adds a moving part that can be affected by handling and setup preferences.
- This is an objective lens cap only, so it does not provide protection for other parts of the optic.
Suggested Comparisons
- Scope caps and lens covers
- Scope accessories and protective covers
- Optic protection accessories
- Rifle scope accessories
Suggested Accessories
- Optics cleaning cloth
- Lens cleaning kit
- Scope cover
- Rifle case
Frequently Asked Questions
What size optics does the Defender Flip Cap Objective 40 fit?
It fits nearly all optics with an outside diameter of 45.5–48.5 mm.
Will the flip cap interfere with my line of sight?
The product description says the snap-flat spring won’t obstruct your line of sight.
How does the cap attach to the scope?
It uses a flexible rubber sleeve that creates a snug fit over the scope.
Is the cap easy to open and close in the field?
The description says it has a smooth flip-up action, is easy to clip back down, and includes dual opening tabs for easy access.
Is this a set or a single cap?
The product title identifies it as a flip cap set for the objective lens.