A tappet plate is an essential airsoft gun part, located in the gearbox of an AEG electric airsoft gun. It is a metal plate, usually made from steel or plastic, which houses a number of components, including metal teeth and a plunger. The teeth grip onto a sector gear which, when the trigger is pulled, will rotate to pull the piston back. The piston then compresses the air within the gearbox to launch the BB pellet. The plunger helps to ensure that the piston is pushed back into position after each shot. It also helps to keep the BBs moving in a consistent and even manner as they travel through the barrel, allowing for more accurate shooting. In some cases, it may be necessary to replace the entire tappet plate in order to repair a damaged airsoft gun. Replacing this part can be done relatively easily with access to the correct tools and parts. Knowing more about tappet plates and their function can help you better understand your airsoft gun and ensure it is functioning properly.