Not to start an argumant but i did some researching on the internet and youtube and found that its a brand new toy, and it does collapse entirely into the hilt. It's called the "Force Action Lightsaber" It does seem larger than the one that he uses but who knows? I feel like im carrying out a hollow idea. It could be fun. I'll just stop talking now.
Nova
All the lightsabers I saw have 4 sections to extend. The one closest to the handle could not fint inside as it is too wide. Also the blades on the 3 other sections had to be shortned to fit inside witout sticking out. Each blade section overlaps the other so i could take a bit off each one.
I'm just curious, do you have to wave it as before to extend the blade, then attach it to the gun?
Unfortunately yes but I believe that if you could deliver a shot blast of air into the bottom of the blade that it would extend the blade fully. That, however, it way out of my capabilities.