For you that do not know how a spider works I will give you a walk through
This picture show the spider in the cocked and ready to fire position.
Pulling the trigger...............
Fig 1
Pulling the trigger releases the sear thus causes the bolt and gun to activate the air from the tank
Fig 2
Once the air has gotten through the gun and up the lpr and to the bolt, the bolt then moves forward thrwing extra pressure sending the ball out the barrel and down to the target
