This training book has been developed from the ground up for beginners who know little about PTS Airsoft ERG technology. As part of our Airsoft Technology Self-Paced Training Series, this book gives an introduction to the basic PTS ERG architecture. The primary goal of this book is to explain the various AEG ERG technical concepts in very simple language. In this book we will also show you how to improve the FPS and ROF performance of the gun. We believe that this book and its support materials have everything you need for an informative, interesting, challenging and entertaining Airsoft educational experience.