NO!Sight NO!vision
Line of sight.
because some people have either short sight or long sight only
Spark notes.com is the best sight to find cliff notes you need
You need a gunsmith.
so the sight of blood does not bother them
Yes. You may need glasses.
We need to have a good eye sight in a amateur boxer contest so that you will not lose in any challenge of boxing.
Maybe they need glasses
To move the strike of the bullet up with an M4 front sight, you would need to rotate the sight post counterclockwise. This will raise the front sight, adjusting the point of impact higher.
this smeans that you eye sight is pretty bad and you need to get six point plus glasses
so they can see under water.
You will need the help of a gunsmith.