I have to admit that I'm not very good with computers, and I still haven't figured out how to post a YouTube link from my phone. So, if you want to see the video on Airsoft units, go to YouTube and in the search box enter, "let's take apart an airsoft unit". It should be the first video to come up, and the YouTube channel you're looking for is titled, "Gary Hoff". If you look around the channel you'll find a lot of tank videos that may be of help to you. And before anyone criticizes, my YouTube channel is NOT monetized and I don't make any money from it. I enjoy making videos and I like the fact that I might be able to help out a fellow tanker from time to time. Hope that helps.