Mechanical sights
According to the door:
- Gap-type (u-type, v-type)
- War according to the door hole (circular hole)
Installation location
- On the barrel side
- Left and right side of the barrel: In order to quickly reload (some firearms from the top loading)
Optical sights
-
Red dot sight (the red dot sight)
-
Holographic sights
-
Laser sights
-
Telescope sights
The main contents from Youtube: https://www.youtube.com/watch?v=pWpaWdF0uXA
