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Defender™ Flip Cap

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Defender™  Flip Cap Click to Enlarge
SKU: E-10
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MSRP: $29.99
*Prices in US Dollars
Reviews:
Defender Flip Cap is rated 4.1 out of 5 by 84.
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Defender® Flip Cap Eyepiece

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 4 out of 5 by from A fix for very tight caps that pull off I bought the cap yesterday for my vortex long-range scope. And right out of the box the cap was too stiff to pop open and it would almost slide off. I contacted support but then I realized the reason was the Caps were way too stiff is because the little lip on the cap was too big. I took a flat knife and gently scratched at the edge of the cap and in the inside of the mating surface. Then I proceeded to polish inside in outside lip and the cap now opens very easily and doesn't pull off with good tactile feel yet. I know this isn't ideal for new product but sometimes you have to take matters into your own hands when quality control is not 99%.
Date published: 2018-05-03
Rated 1 out of 5 by from Completely fail under cold and damp conditions The tension / adhesion that holds these covers fails completely under cold and damp conditions. In approximately 20 degree snowy weather this 3rd rifle season here in Colorado (the type of weather you might want to have a scope cover for), both this and the larger objective cap slipped off multiple times during the course of a single hunt. Attempting to deploy the flipping action often removed the scope cover from the scope. Having a piece of equipment fail multiple times during the course of closing on a deer was an unnecessary distraction and could have ruined the opportunity. The larger objective also slipped off and was lost in the long hike back carrying the quartered deer. If you are hunting in potentially cold and damp / snow conditions look elsewhere, these caps are a hinderance rather then an assistance.
Date published: 2017-11-10
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
Rated 3 out of 5 by from Froth cover fits perfectly rear cover not as good I recently purchased defender caps with a Vioer HS 4-16 with the 44mm objective. At first the covers fit perfectly with no slipping when you tried to flip the caps open, but when the temperatures started to drop the rear objective cover started to try to slip off when trying to open it. After reading reviews on the Vortex cite there were some comments about an adhesive that would not mark up the scope but would hold the cover in place. I tried to contract Vortex to find out where to get the adhesive but never received an email back, which is disappointing because I have always received great customer service from Vortex. If it wasn’t for the slipping issue it would be a five star product.
Date published: 2018-09-24
Rated 1 out of 5 by from Poorly Designed for Proprer Fit Both the objective (50) and eyepiece (40-46mm) Vortex Defender Flip scope covers, the specific sized scope covers recommended by Vortex Optics for my 2 Vortex scopes (Viper HS 4-16x50) have continuously failed in damp weather, causing the scope covers to slide off when attempting to lift the cover and on two occasions allowing the scope covers to fall off and get lost in the field when by rifle was slung over my shoulder. Any level of moisture - and I live and hunt in the Pacific Northwest - breaks the tension between the scope cover and the scope barrel, allowing the scope cover to slide freely. Even in dry conditions, any attempt to flip open the cover without using two hands causes the rubber around the scope barrel to pull forward towards the point where pressure is being applied to flip open the cover. I have now had to purchase 4 additional scope covers - 2 to replace the 2 lost in the field - and 2 to carry on hunting trips as back ups. I am looking for suitable alternative covers - and this is disappointing..
Date published: 2017-11-13
Rated 2 out of 5 by from Eye Piece Cap I have these mounted to a Vortex Viper PST 6-24x50 FFP. First off let me say the spring tension and ambidextrous tabs are amazing. The rubber that grips the eyepiece housing grips well and creates a positive seal. The dope disc is a cool novelty but not really a must as I have been doing this on scope caps that do not have these modular systems already in place for a while now. This particular scope has a rubber eye piece. Because of the both pieces are rubber it causes a lot of movement when pressing the cap closed. Once its moves to far it compresses the eye piece into into the scope cap and the cap will not close. You can remove the rubber eye piece off of you scope however I do not like the Idea of modifying a one thousand dollar scope. This cap would work flawlessly on a scope with out a rubber eyepiece. That is the only reason this is getting two stars because I can not use this product on this particular scope.
Date published: 2017-06-15
Rated 2 out of 5 by from So close These are a little more expensive than other brands, but being made by Vortex, I thought they'd fill the bill. They are well built, for sure, but the fit leaves a bit to be desired. The eye piece cover fits perfectly and operates flawlessly. The objective cover is another story. The cap will slip off my Viper 4 - 16 x 44, so it takes two hands to operate, one hand to hold the cover in place and the other hand to open the cover. That's pretty inconvenient, in my mind. I ordered the size recommended by Vortex too, so I'm feeling slightly frustrated by this. I'm giving them two stars because they do a good job of protecting the lenses, but operating them takes some effort and precious time if you have a trophy lined up.
Date published: 2018-10-02
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Is the outside diameter listed a measurement for the outside of the scope of will fit?

Asked by: Whacks
Thanks for the question! The outside diameter of our optics are listed under the specs. If you need help getting the correct Defender Flip Caps, give us a call at 800-426-0048 ext. 5 and we will be able to help you out.
Answered by: Graham at Vortex Optics
Date published: 2018-10-11

What size flip caps do I need for my Vortex Scopes ? Both are Vortex Crossfire ll Scopes  1. 4-12x44 2. 6-18x44

Asked by: Peepaw the firefighter
Thanks for the question! You will need the E-10 and O-44 for scope #1 and E-10 and O-50 if going over the AO, otherwise O-44 if you're putting it over the sunshade.
Answered by: Josh at Vortex Optics
Date published: 2018-10-11

Will the E-10 fit my Zeiss Conquest HD5 5-25x50 eyepiece? Also, what is the lead/delivery time on the dope disks?

Asked by: MKESCQ
Thanks for the question! I am unable to find the specs on that scope to say for sure that it will fit. The lead time on DOPE Disks is usually about 2-3 weeks.
Answered by: Graham at Vortex Optics
Date published: 2018-10-09

what size caps for Steiner P4Xi 1-4X24? (5202)?

Asked by: Bobby
Thanks for the question! I would recommend going with the E-10 eyepiece the O-24 objective piece for your scope.
Answered by: Graham at Vortex Optics
Date published: 2018-10-09

What size will fit an Excalibur x bow tact zone scope?

Asked by: Sigi1862
I was unable to find any outside diameter measurements for that optic. If you're able to, use a micrometer to obtain them and give us a call at 800-426-0048 Ext. 5 if you need further assistance selecting the appropriate cap size.
Answered by: Josh at Vortex Optics
Date published: 2018-10-08

I have a Steiner GS3 3-15 x 50mm. What size Defender Flip Cap fits this scope?

Asked by: Redtail
I was unable to find the outside diameter measurements for that optic so I can't say for certain. Our O-50 will likely fit the objective lens. If you're able to use a micrometer you can look at the sizes posted on our website for each cap. Please give us a call at 800-426-0048 Ext. 5 if you need further assistance after you're able to determine the measurements.
Answered by: Josh at Vortex Optics
Date published: 2018-10-08

Which covers would I need for a crossfire 2 4-16x50?

Asked by: Dailyj38
You will want the eyepiece (E-10) and depending on if you want to run your sunshade, you'll need the O-50 if you choose to do that. If you want to put the cap on the end of the objective without the sunshade then you'll want the O-56.
Answered by: Josh at Vortex Optics
Date published: 2018-10-01

What is the black plastic washer or ring that comes in the package with the cap for?

Asked by: rocketrob
That acts as a spacer and goes in through the back. You push it up into the groove and it acts as a spacer so the cap doesn't slide too far on the scope.
Answered by: Josh at Vortex Optics
Date published: 2018-09-27
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