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Defender™ Flip Cap

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SKU: E-10
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MSRP: $29.99
*Prices in US Dollars
Reviews:
Defender Flip Cap is rated 4.5 out of 5 by 53.
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Defender® Flip Cap Eyepiece

New for 2016. This 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 all over the world 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 E-10 fits all Vortex® Riflescopes except the 1-inch tube Viper® model VPR-M-01BDC, VPR-M-04BDC and VPR-M-03BDC. Outside diameter: 41.5-46 mm | 1.6-1.8 inches


Key Features

VIP Warranty

Rated 1 out of 5 by from Does not fit VIPER HS Bought these for my viper HS 4-16x44. They were a bit expensive in my opinion but for how tough they looked I thought it would be well worth it. Unfortunately they are not sized very well for my scope even though they say it fits it. Turns a should be one handed operation into two handed because you have to hold the cap on with one hand while you open it with the other. Missed a opportunity on big buck last weekend because of it. I'll be going back to my cheap butler creek caps as they fit much better. Hopefully they redesign these to fit my scope better as these have potential to be really nice caps
Date published: 2017-06-15
Rated 5 out of 5 by from Tighter fit, same quality product in the past, the flipcovers have been inadequate because the fit wasn't tight enough. This new line of defender flip cap's are much snugger. I have a .308 remington 700 with mckrees precision chassis and being able to have a quick dope book right above the eye has been incredibly helpful. Although that is just a feature, the product itself is durable and flexible rubber that maintains a tight hold on the optic. Coupled with that and sufficient tension springs make this a great product yet again from Vortex.
Date published: 2017-06-15
Rated 5 out of 5 by from Tighter fit, same quality product in the past, the flipcovers have been inadequate because the fit wasn't tight enough. This new line of defender flip cap's are much snugger. I have a .308 remington 700 with mckrees precision chassis and being able to have a quick dope book right above the eye has been incredibly helpful. Although that is just a feature, the product itself is durable and flexible rubber that maintains a tight hold on the optic. Coupled with that and sufficient tension springs make this a great product yet again from Vortex.
Date published: 2017-06-15
Rated 5 out of 5 by from Nice fitting caps Shipping was fast as usual. Caps fit snugly. I like these better than the Butler Creeks I had. The spring tension is much better and the 3 position on the eye piece cap is great. I put these on my Viper PST 6-24x50 FFP which sits atop a 6.5 Grendel AR. Although the eyepiece cap moves some on opening due to the rubber eyepiece on the scope it's not a big distraction. The dual opening tabs are a plus. All in all I think these are great scope caps. Now, if only Vortex would make their dope discs available.
Date published: 2017-06-15
Rated 5 out of 5 by from Nice fitting caps Shipping was fast as usual. Caps fit snugly. I like these better than the Butler Creeks I had. The spring tension is much better and the 3 position on the eye piece cap is great. I put these on my Viper PST 6-24x50 FFP which sits atop a 6.5 Grendel AR. Although the eyepiece cap moves some on opening due to the rubber eyepiece on the scope it's not a big distraction. The dual opening tabs are a plus. All in all I think these are great scope caps. Now, if only Vortex would make their dope discs available.
Date published: 2017-06-15
Rated 5 out of 5 by from Best scope caps by far! Another top notch product from Vortex. Shipping was fast and customer service was great as always. These caps are heavy duty and far more durable than any other caps I've ever used. These things fit like a glove on your scope and are very snug. These caps are far more superior than any other competitor. The Dope Disk feature is a great option and I will be getting mine as soon as possible. Thanks again to Vortex for making a product that maintains your reputation for top of the line quality.
Date published: 2017-06-15
Rated 5 out of 5 by from Best scope caps by far! Another top notch product from Vortex. Shipping was fast and customer service was great as always. These caps are heavy duty and far more durable than any other caps I've ever used. These things fit like a glove on your scope and are very snug. These caps are far more superior than any other competitor. The Dope Disk feature is a great option and I will be getting mine as soon as possible. Thanks again to Vortex for making a product that maintains your reputation for top of the line quality.
Date published: 2017-06-15
Rated 1 out of 5 by from Won't stay on scope I tried this on my Viper PST 1-4. The fit on the eyepiece is not tight enough - when trying to flip the hinged cap up the whole unit slides off the bottom of the ocular bell before the cap unsnaps.
Date published: 2017-06-15
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What size will fit the vortex 3 x 32 crossbow scope? Do I need two, one for each end? It's my boyfriend's scope, I know nothing about them.

Asked by: KimG
The O-32 will fit both ends of your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-10-17

What size will fit my Intrepid 4.5-22x50? Thanks

Asked by: Nhunt
Sizes E-10 and O-50 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-10-13

How would paint hold up on this or will it just flake of the rubber  immediately?

Asked by: Jake
Painting the Defender Flip Caps can be done, but as the rubber expands and contracts it will crack the paint and it can come off.
Answered by: Mike at Vortex Optics
Date published: 2017-10-12

What size flip caps would I need to fit a Redfield 3-9x42?

Asked by: Wilandon92
If you could get the outside diameter of the eyepiece and objective and give us a call at 800-426-0048 ext 5 we can get you the correct sizes.
Answered by: Mike at Vortex Optics
Date published: 2017-10-11

Hi, what size defender caps would I need for my Viper PST Gen 2, 5x25 x 50? Thank you!

Asked by: TylerB
Sizes E-10 and O-50 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-10-10

Which flip cap would I need for the vortex crossfire 2 6-24x 50 scope?

Asked by: Jo3 6
I recommend our Defender Flip Caps in sizes E-10 and O-56 for your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-10-16

Hello, What size will fit the Cabelas AR Scope 1x-6x .223? (I think it's the same specs as your Strike Eagle)

Asked by: MastaMarksman
The E-10 and O-24 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-10-04

I have Viper HS4307LR and bought E-10 to try out in hopes of purchasing a dope disk. Cap goes on with a little resistance, but when I pop the cover open the entire cap comes off the scope. It is too loose, and it was installed correctly. Any suggestions? 

Asked by: Teddy#39
You can try wiping the inside of the cap and the scope with rubbing alcohol to clean off any oils to give it more grip. If that does not work a small piece of two sided tape on the bottom of the scope will hold the cover in place.
Answered by: Mike at Vortex Optics
Date published: 2017-10-04
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Rated 1 out of 5 by from Does not fit VIPER HS Bought these for my viper HS 4-16x44. They were a bit expensive in my opinion but for how tough they looked I thought it would be well worth it. Unfortunately they are not sized very well for my scope even though they say it fits it. Turns a should be one handed operation into two handed because you have to hold the cap on with one hand while you open it with the other. Missed a opportunity on big buck last weekend because of it. I'll be going back to my cheap butler creek caps as they fit much better. Hopefully they redesign these to fit my scope better as these have potential to be really nice caps
Date published: 2017-06-07
Rated 5 out of 5 by from Tighter fit, same quality product in the past, the flipcovers have been inadequate because the fit wasn't tight enough. This new line of defender flip cap's are much snugger. I have a .308 remington 700 with mckrees precision chassis and being able to have a quick dope book right above the eye has been incredibly helpful. Although that is just a feature, the product itself is durable and flexible rubber that maintains a tight hold on the optic. Coupled with that and sufficient tension springs make this a great product yet again from Vortex.
Date published: 2017-06-07
Rated 5 out of 5 by from Tighter fit, same quality product in the past, the flipcovers have been inadequate because the fit wasn't tight enough. This new line of defender flip cap's are much snugger. I have a .308 remington 700 with mckrees precision chassis and being able to have a quick dope book right above the eye has been incredibly helpful. Although that is just a feature, the product itself is durable and flexible rubber that maintains a tight hold on the optic. Coupled with that and sufficient tension springs make this a great product yet again from Vortex.
Date published: 2017-06-07
Rated 5 out of 5 by from Nice fitting caps Shipping was fast as usual. Caps fit snugly. I like these better than the Butler Creeks I had. The spring tension is much better and the 3 position on the eye piece cap is great. I put these on my Viper PST 6-24x50 FFP which sits atop a 6.5 Grendel AR. Although the eyepiece cap moves some on opening due to the rubber eyepiece on the scope it's not a big distraction. The dual opening tabs are a plus. All in all I think these are great scope caps. Now, if only Vortex would make their dope discs available.
Date published: 2017-06-07
Rated 5 out of 5 by from Nice fitting caps Shipping was fast as usual. Caps fit snugly. I like these better than the Butler Creeks I had. The spring tension is much better and the 3 position on the eye piece cap is great. I put these on my Viper PST 6-24x50 FFP which sits atop a 6.5 Grendel AR. Although the eyepiece cap moves some on opening due to the rubber eyepiece on the scope it's not a big distraction. The dual opening tabs are a plus. All in all I think these are great scope caps. Now, if only Vortex would make their dope discs available.
Date published: 2017-06-07
Rated 5 out of 5 by from Best scope caps by far! Another top notch product from Vortex. Shipping was fast and customer service was great as always. These caps are heavy duty and far more durable than any other caps I've ever used. These things fit like a glove on your scope and are very snug. These caps are far more superior than any other competitor. The Dope Disk feature is a great option and I will be getting mine as soon as possible. Thanks again to Vortex for making a product that maintains your reputation for top of the line quality.
Date published: 2017-06-07
Rated 5 out of 5 by from Best scope caps by far! Another top notch product from Vortex. Shipping was fast and customer service was great as always. These caps are heavy duty and far more durable than any other caps I've ever used. These things fit like a glove on your scope and are very snug. These caps are far more superior than any other competitor. The Dope Disk feature is a great option and I will be getting mine as soon as possible. Thanks again to Vortex for making a product that maintains your reputation for top of the line quality.
Date published: 2017-06-07
Rated 5 out of 5 by from Great Flip Caps Another fantastic product by Vortex! I've gone through several brands and this one is by far the best one I've tried. It always seems like they just don't fit quite right and Vortex hit it out of the park. I've got a Vortex Viper PST 4-16 and they fit perfectly. Ultra rugged and the fit/finish is consistent with the Vortex name. Its also nice to have your ballistics fit right into the cap where its easy to see. Great Job!
Date published: 2017-06-07
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