Airsoft has been well established in Asia for over 20 years, but only in recent years has there been much interest in the Western world. Most professional literature on Airsoft were written in Japanese, with very few translated works available. Even though we are seeing more and more tech tips (in English) popping up on the internet these days, too many of them were written by newcomers who don't really know what they are talking about. If you upgrade your AEG based on their advices, you may risk running into unexpected troubles. At MechboxPRO (a subsidiary of AirsoftPRESS), we produce technic...