Wild West Gun Shop

Primary Arms 3X LER Red Dot Magnifier Gen IV


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Primary Arms 3X LER Red Dot Magnifier Gen IV

The Primary Arms Long Relief 3X Magnifier (Gen IV) is waterproof and fog resistant. Place the magnifier behind your red dot or holographic reflex sight to instantly magnify the sight picture at 3x power. The new Gen IV model has a longer eye relief, wider field of view and improved clarity to provide an enhanced user experience. The integrated diopter provides a fast focus ability to keep the image clear. Azimuth and elevation adjustments keep the dot centered in your field of view. A rubber armor sleeve protects the body of the optic from harsh impacts. This tough magnifier features a lifetime warranty.


  • 8.00 mm Exit Pupil Diameter
  • 2.64 in. Eye Relief
  • 37.93 ft. Field of View @ 100
  • 3x Magnification
  • Classic Optic Series
  • 7.9 oz. Weight



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Ready to purchase firearms online?

With the new CFO changes as of May 18, 2022, the new requirements to purchase a Non-Restricted Firearm online include:

  • We need a photo of the front and back of your PAL
  • Photo of the front and back of your Driver’s License or Government Issued Photo ID
  • Ensure you are using the email address that is on file with the CFP

We have added image upload fields to the order form to send your pictures. You can also attach them to your account or email them to us at [email protected].