Approaching Vector Optics June News & Tips

August 13th, 2020

Absolute Co-Witness or Lower 1/3 Co-Witness?

You may have learned that if use both iron sights andred dot sights while shooting, it will be more accurateand also increase the speed of target acquisition. Cause red dot sights may fail sometimes, using both of them will be more insured.Then comes a question, Absolute co-witness and Lower 1/3 co-witness, which one is better? Actually, there is nothing good or bad about Absolute co-witness and Lower 1/3 co-witness, both of them have their advantages and disadvantages. They are just different installation method.


To put it simply, it is the height of your red dot sights the biggest different between Absolute co-witness and Lower 1/3 co-witness. There are 3 popular center heights, as picture 0 shows,one is 36mm(1.4")---Absolute co-witness;one is 40.4mm(1.6 ")--- Lower 1/3 co-witness;one is 38.1mm(15").As picture 1 shows, If you mount the red dot sight at the same height as the iron sights and the red dot is aligned with iron sights, it is called Absolute co-witness.


If you mount the red dot sight higher than the iron sights and the iron sights appears in the lower 1/3 of the optic window, it is called Lower 1/3 co-witness. You need to change your line of sight to make red dot align with the iron sights.

Using Absolute co-witness, the red dot is always aligned with iron sight so you can react faster and more accurate when the target appears in your field of view BUT the iron sight will block part of the field of view.(Picture 2)

Using Lower 1/3 co-witness can provide wider field of view and less interference (Picture 3) BUT you need to change the line of sight when you need both red dot sight and iron sight. (Picture 4)

Therefore, the choice depends on personal preferences and habits.


A good horse often needs a good spur---34mm Continental


The first batch of 150pcs 34mm Continental FFP have been sold out in 20 days! We now stpeed up our production, and we guarantee delivery within the shortest time! If you haven't known this product yet, let's see why it is so popular!


These are what a Continental can provide you. What's more, the new 34mm FFP Continental add the zero stop funcation.

In simple terms, you can get a perfect and clear image with Vector Optics 34mm FFP Continental as shown in the following figures.


If you want to know the price or place the order you can contact or go to our official website to get more information!

Join the "Vector Optics Riflescope, Red Dot Sight Export & Import" group to know more about Vector Optics:

New Office , New Beginning


The renovation for more than two months finally ended, and we moved into the new office in June!! Spacious office, neat warehouse and iconic logo wall...


Since 2007, this is the sixth moving of Vector Optics. Over the years, the area of the office is getting bigger and bigger and Vector Optics is getting better step by step, the only constantis the quality of the product which is our proudest thing. Thank you for your support of Vector Optics, hope you can appreciate our joy!


NextApproaching Vector Optics July News & Tips

PreviousApproaching Vector Optics May News & Tips

Subscribe to our newsletter!
Follow Us