Htwarrior, in his Airsoft Diaries 8, starts to do a rebuild an M4 AEG from ICS Airsoft. In part 1, he coves about shimming gears... "Hello! In this entry of the Airsoft Diaries I am restoring an ICS M4 S System, starting with the shimming process. For this project I am distributing the content into different parts to make the information more manageable. This is different from my previous video that was 40 minutes long repairing a Tokyo Marui G36C Airsoft AEG. I'm looking forward to your feedback on the changes.

Typically, I also write out a blog post of the videos I produce which adds to the overall length of time it takes for me to complete a project."