19. Attach hose to nail gun

Now it is time to attach the gun to the compressor, much like you attached the hose before:  slide out - push on - ease back over. 

Note #1:  it might be easier to attach the gun before you turn on the air, so you are not fighting with the pressure - but it doesn't matter.

Note #2:  the gun will not "shoot" nails until the end of it is pushing against something.  This is a safety feature.