Reverse plunger
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The reverse plunger mechanism works in a much more complicated way than the direct plunger. In a clip system reverse plunger mechanism, the plunger tube not only moves backwards, but also forward while simultaneously grabbing a dart from a clip, drum, magazine, or integrated ammunition holder.
This plunger system has reduced range due to mechanical inefficiencies of the design. When the plunger moves back it creates a seal, but when the plunger moves forward, the seal breaks and some of the air leaks out. A reverse plunger also typically leaves a void between the plunger and the dart chamber. The air inside this void acts as a spring, pushing back against the air entering from the plunger, greatly reducing the force delivered to the dart. The result is a much less effecient air delivery system, which is why reverse plungers are disliked by many Nerfers.