The illumination of your Razor HD or Viper PST riflescope is still working at the lower numbers. These lower numbers are intended to allow the use of illumination while using night vision equipment. Night vision equipment requires such low intensity illumination that the naked eye usually cannot see the illumination.

• Razor HD 1-4x24 Riflescopes: Professional-grade illumination: designed for daytime, low light and night vision devices. The top six settings (6, 7, 8, 9, 10 and 11) are visible in the daytime, depending on the background color. Settings below 6 are for low light use when the user's eyes have become adapted to lower light levels. Lowest settings are intended for use with night vision devices.
• Razor HD 5-20x50 Riflescopes: Professional-grade illumination: designed for daytime, low light and night vision devices. The top setting (11) is visible in the daytime, depending on the background color. Settings below 11 are for low light use when the user's eyes have become adapted to lower light levels. Lowest settings are intended for use with night vision devices.
• Viper PST and Viper HS 1-4x Riflescopes: Professional-grade illumination: designed for daytime, low light and night vision devices. The top five settings (6, 7, 8, 9, 10) will be visible in the daytime, depending on the background color. Settings below 6 are for low light use when the user's eyes have become adapted to lower light levels. Lowest settings are intended for use with night vision devices.
• Other Viper PST Riflescopes: Professional-grade illumination: designed for daytime, low light and night vision devices. The top three settings (8, 9, 10) will be visible in the daytime, depending on the background color. Settings below 8 are for low light use when the user's eyes have become adapted to lower light levels. Lowest settings are intended for use with night vision devices.

If the dot of your riflescope doesn't look perfectly round, the distortion may be caused by the way your eye perceives the dot—making the dot appear misshapen. This is called astigmatism. Most everyone has some degree of natural astigmatism. Here are a few ways to tell if the distortion you are seeing is caused by your eyes or is a problem with the scope:

• Look through the scope with your other eye. If the dot changes shape from one eye to the other, the misshapen dot is likely caused by astigmatism.
• Look through the scope and rotate the scope on its optical axis. If the irregular shape maintains its position, it's probably because of how your eyes are seeing the dot. If the irregular shape of the dot rotates with the scope, there may be a problem with the scope.
• Try photographing the dot. Close the objective flip cover of the scope, place the lens of a digital camera up against the eyepiece of the scope, and take a photo of the dot. Compare the photo with what you are seeing through the scope. If the shape is the same as what you are seeing through the scope, the scope may be defective.

The above tests should help you decide if you need to send in your riflescope for Warranty Service.

Check the battery as suggested in the Troubleshooting section of the StrikeFire and SPARC product manuals (page 11). If you have replaced the battery, checked the installation of the battery, and tightened the battery cap as suggested, but your unit still doesn't come on, it is possible that the Night Vision mode is activated.

• Press the Night Vision button, then press the On/Off button as before.

Please see your Product Manual for correct location of Night Vision button.

If your unit still has no dot, it may be defective and should be sent in for warranty service.

The newest version of the illuminated Strikefires and SPARCs require the On/Off button to be depressed for 5 seconds to turn the unit off.

If your unit still won't turn off, it may be defective and should be sent in for warranty service.

If either of the above statements applies to your red dot scope, it is extremely likely that the Night Vision mode is activated and being perceived as the Regular mode of operation.

• When the dot looks like a speck and the intensity won't adjust with the up and down buttons, the scope is in Night Vision mode.
• The Night Vision mode is intended to be used with night vision equipment. Night vision equipment requires such low intensity illumination that the naked eye cannot usually see the illumination.

Your unit should have a nice bright dot for regular daytime use.

The dot looks very large. Look through the scope with the objective flip cap open—as if you are using it on your gun. Does this make the dot smaller and appear as it should?

If you feel the dot is still not correct, feel free to send it in for warranty service and evaluation.

The illuminated dot on our Red-Dot scopes is made up of a series of tiny dots, or pixels. Sometimes, when we look at the dot long enough, our brains will begin to adjust for what we are seeing and actually separate the dot into pixels. This is particularly obvious if looking through the scope with the objective flip-cap closed.

Rest your eyes for a moment, then look through the scope with the objective flip-cap open—as if you are using it on your gun. Does this make the dot appear as it should?

If you feel the dot is still not correct, feel free to send it in for warranty service and evaluation.

The dot has a hazy circle around it, making it glare and appear very large. Look through the scope with the objective flip cap open—as if you are using it on your gun. Decrease the intensity of the illumination. Does this make the dot appear as it should?

Refer to the StrikeFire or SPARC product manual for the location of the Increase/Decrease buttons.

If you feel the dot is still not correct, feel free to send it in for warranty service and evaluation.

Your unit only has the red dot, even though you ordered or bought the Red/Green version of the StrikeFire. Open the objective flip cap and look at the objective lens.

• Do you see a very slight greenish tint to the objective lens?
• Is the objective lens definitely red?

If the lens is definitely red, you have a Red Only version of the StrikeFire red dot scope.

The dealer you purchased the StrikeFire from should be able to exchange the unit for you if you would still prefer the Red/Green version. If returning the unit to your dealer is problematic, please feel free to call Vortex Optics at (800) 426-0048, extension 4.