In this thread you can post informations about the Backpack #4. Original pictures, worth knowing, found parts and so on. It should help you build backpacks that are as accurate as possible.
I will start with a picture of my SWAT-Pack and the individual components that I know:
1. Karrimor Frame with round (!) corner (A.3 Frame?)
2. Plumber Cups
3. Tupperware "Stow-n-go", Nr. 767
4. Radio: "Sonix Victory 75" or "Northstar MT-1809"
5. "G