Vortex Defender Flip Up Cap (Eyepiece)
"The Vortex Defender E-10 eyepiece cap is a simple but highly effective accessory for protecting the ocular lens of your riflescope. Built to guard against dust, moisture, and general wear, it maintains a secure fit while remaining quick and easy to use. The spring-loaded design flips open smoothly and stays out of the way when you’re ready to shoot, helping ensure your optic is always clear and ready for action. If you want a dependable way to protect your riflescope’s eyepiece, the E-10 is an excellent choice." - Soph.
Vortex Defender Flip Up Cap (Eyepiece)
The Vortex Defender Flip UP Cap (Eyepiece) is the last flip cap you will ever need!
Virtually indestructible, this cap will fit snugly on nearly all Vortex Optics and features a snap flat spring that will keep your line of sight unobstructed.
Rifle ranges the world over are littered with broken flip caps. This is one cap you will most likely never see in a flip cap boneyard.
The E-10 cap has three stop positions. The first vertical, to put your dope disk (optional accessory) literally right in your face. The second at a 45° and the third at 90° to lay flat back.
The Vortex Defender Flip Up E-10 fits all Vortex® Riflescopes except the 1-inch tube Viper® model VPR-M-01BDC, VPR-M-04BDC and VPR-M-03BDC and range of other riflescopes that have an eyepiece with an outside diameter of 40-46mm.
- Compatibility Fits most Vortex riflescopes, excluding 1-inch tube Viper models VPR-M-01BDC, VPR-M-04BDC, VPR-M-03BDC
- Eyepiece Outside Diameter 40–46 mm (1.57–1.81 inches)
- Stop Positions Vertical, 45°, 90°
- Mechanism Snap-flat spring
- Durability Virtually indestructible design
- Virtually indestructible design built to withstand heavy use and harsh conditions
- Snap-flat spring mechanism keeps your line of sight unobstructed when the cap is open
- Three stop positions (vertical, 45°, and 90°) for versatile viewing angles and dope disk placement
- Secure, snug fit compatible with nearly all Vortex optics eyepieces (40–46mm diameter)
- Reliable and durable alternative to standard flip caps prone to breaking
- Optimised for tactical and field use, ensuring long-lasting performance and convenience
- Vortex Defender Flip Up Cap (Eyepiece)
1. What does the Defender eyepiece cap do
It protects the eyepiece (rear lens) of your scope from dust, dirt, moisture, and scratches
2. What size does it fit
It fits eyepieces with an outside diameter of approximately 40–46mm (1.57–1.81 inches)
3. Is it compatible with all Vortex scopes
It fits most Vortex riflescopes, with a few exceptions such as certain 1-inch tube Viper models
4. How is it installed
It uses a simple press-on friction fit that secures firmly to the eyepiece housing
5. What makes it different from objective caps
This version is specifically designed for the rear (ocular) lens, rather than the front objective lens
6. Does it open easily while shooting
Yes, the spring-loaded hinge allows quick, one-handed flip-up operation
7. What are the three stop positions
It can lock in vertical, 45°, or fully flat (90°) positions for flexibility and visibility
8. Can it hold a dope disk
Yes, the vertical position allows you to attach a dope disk for quick ballistic reference
9. Will it block my view when open
No, it’s designed to stay flat and completely out of your sight picture when flipped open
10. What warranty does it come with
It is covered by the Vortex VIP Lifetime Warranty, which is unlimited, unconditional, and transferable
- Vortex VIP Lifetime Warranty