Step 5: Understanding Spring Guns (Part 2)
Shown in Picture 2 is the catch mechanism. It is a part that is normally over the plunger, but is shown by itself so you can see it. Picture 3 shows the plunger without the spring or catch mechanism on it. see that curved part on it? That is where the catch engages, or put in simpler terms, where the gun cocks. The curved part of the plunger, when pulled back to the catch, forces the catch up. At the end of the curved part, the spring on the catch forces the catch down. Notice that the plunger cannot move forward, because the catch keeps the plunger from moving forward. Pictures 4 and 5 demonstrate the gun in its cocked position. Note that the curved part of the plunger is stuck behind the catch.
When the trigger is pulled, the catch is forced up and the plunger shoots forward, compressing the air that pushes the dart out of the barrel. You can see how the trigger forces the catch up in Picture 6.
If you do not understand this or it is unclear, this is fine. I suggest you buy a Nitefinder for modification, as mechanisms will become clear when you disassemble the gun. Even if you don't quite know how a gun works, it is fine to open the gun, as long as you take caution not to lose any pieces. Opening the gun and tinkering with it yourself will help with your understanding of the gun's mechanisms. It is important to be careful but not to be extremely careful.