A great number of people are asking me how to solder. I’ve seen so many connectors with globs of poorly used solder, cold solder joints, melted connectors, and fried MOSFETs from over heating them. I hear your cries for help, and have come to the rescue with this video on “Soldering Techniques for Airsoft”. This is just a basic guide on what you need to make a quality solder joint on various items. Using this information here, you should be solder anything you’d need to install in an AEG.
The Festering Wound of the Airsoft World
It’s like putting spam in an open wound.
The Festering Wound of the Airsoft World 
i learned more watching this than i ever did at college in 2 years