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A Longshot CS-6's plunger tube.

A plunger tube is an internal part found on most non-electric blasters.


A plunger tube works differently in both types of plungers. On a direct plunger, it cases the plunger head, O-ring, plunger rod, and spring, and has a small hole, this hole leads to where the dart is loaded. On a reverse plunger, it acts as an air reservoir, when the blaster is being fired, it releases itself onto the plunger rod.