Below are all the Holosun rifle optics that have a 1/3 Co-Witness. These red and green dot sights are offered at the best price with free shipping.

1/3 Co-Witness rifle optics are higher than absolute co-witness optics. Your iron sights are absolute co-witness. Having a 1/3 co-witness rifle optic will allow the dot to sit about 1/3 higher than your iron sights.

1/3 Co-witness optics also let you keep a more forward facing facial position when shouldering your weapon, you don't need to hunch down as much for the cheek weld.