Airsoft M130, M140 & M150: AEG Mechbox Optimization

The title of the book tells it all - it is all about the configuration of a M130/140/150 based mechbox for your airsoft AEG. Configuring a high power mechbox with a high power spring requires advanced level skills and special attention to the details. We will help you meet the challenge! Configuration of Helical Gears is demonstrated in-depth.