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Flip Cap Optic Cover

Size 4

One per Package

Flip Cap Optic Cover Click to Enlarge
SKU: FC-4
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MSRP: $12.99
*Prices in US Dollars
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Flip Cap Optic Cover — Size 4

The hinged flip cap optic cover makes it a snap to keep fine optics protected and flips completely back so the cap lies flat. Simply slip the rubber cover over the objective or ocular end of your optic.

Size 4 fits over a variety of optics with these outside diameters (OD):

  • 35-40 mm
  • 1.4–1.6 inches



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what flip up caps would fit my Crossfire II 6-24x50mm AO CF2-31045 ?

Asked by: jude22
Our Defender Flip Caps in sizes E-10 and O-56 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-10-16

What size covers will fit a Nikon prostaff rimfire 3-9x40 scope? Thanks!

Asked by: Tony
I could not find outside diameter measurements for your eyepiece and objective, if you can measure those you can compare the measurements to what is listed under each size on our website or give us a call at 800-426-0048 ext 5 with the measurements and we can tell you the sizes you will need.
Answered by: Mike at Vortex Optics
Date published: 2017-10-04

What's the correct flip up caps for a Vortex crossfire II CF2-31005? thanks!

Asked by: Ericm94
Sizes 5 and 6 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-09-07

Could you recommend scope flip caps for 3-12x42 HP Diamondback objective and eye piece?

Asked by: Bill13010
Sizes 5 and 6 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-09-05

I just bought the viper hst 6-24x50 what size flip caps do I need?

Asked by: Lonestarflash
Sizes 5 and 7 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-08-28

What size lens caps do I need for my Viper PST Gen II 5-25x50??

Asked by: Chris_N
Sizes 5 and 7 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-08-28

Hi I have a vortex viper 2.5-10-x44 scope and I purchased the number 5 and 6 flip caps for it.  While the #6 fits perfect, the #5 is too loose and comes off when I flip the cover.  These are the sizes that were recommended.  Would a #4 be too small?

Asked by: Aaron
The size 4 will be very tight but should fit. You could try putting a small piece of two sided tape on the bottom of the scope under your size 5 flip cap to keep it in place if it is moving when you open the flip cap.
Answered by: Mike at Vortex Optics
Date published: 2017-08-14

Which flip up caps would fit a Viper Rifle Scope 30mm Tube 6.5-20x 44mm. I'm looking for the front and rear

Asked by: jlobby
Sizes 5 and 6 will fit your scope.
Answered by: Mike at Vortex Optics
Date published: 2017-08-07
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