How does an Airsodft Scope work?

Question

I have no knowledge how these work. can you me tell how to adjust a scope to the direct of the BB and what 3-9X40 mean? Thanks

Answer 1

umm... well... what you do is put a target out about 100 ft away, shoot, then use the chart that came with the scope to adjust the top and side screws to fit where the bb hits the next time. 3-9 is your zoom level just like in any camera or video camera. it magnifies it 3-9 times and has a little thing you can twist to make zoom bigger and smaller. x40 is actually in mm's and thats how big the front is, thats also showing you your angle of view. like i said, shoot, adjust, shoot, adjust shoot, adjust until you get it right. took me 2 hr 30 mins last tiem i tried :( l8r

Answer 2

What does 4x20 mean?

4 - The first number means the magnification. In this example it is 4x normal eyesight.

20 - Means the diameter of the viewing lens (not the eyepiece) in millimetres.

The tech term for this is "Objective Lens Size"

4x20 - Therefore is 4x magnification seen through a 20mm wide view lens.

And what about 3-9x40 then?

This means the scope has variable "zoom" capability.

In this case it ranges between 3 and 9x magnification though a 40mm wide view lens (Objective lens)

Unless otherwise stated the numbers are whole numbers, so on a 3-9x there will be a 3, 4, 5, 6 ,7, 8 and 9x position but not fractions or some sort of granular 3.75x type of thing.

As an aside, 3-9x40 is the most popular general purpose scope size