Tappet Plate and Selector Plate

Tappet Plate and Selector Plate

The tappet plate is an important part of an airsoft AEG gearbox. The tappet plate is connected to the air nozzle to, via contact with a spring and a nub on the sector gear, enable the air nozzle to cycle back and forth. This motion enables the air nozzle to feed the next BB into the hop-up unit. Upgraded tappet plates are reinforced to withstand much higher pressure.

The selector plate is the device that sets the gearbox to safe. Upgraded selector plates generally conduct electricity better, so they are not only more efficient but also prevents overheating.