I did this with another pump a while ago. It didn't go 100ft for me, but it was close. I probably had a bad pump. Looking at yours I have to give you props definetly!
Personally, I like the older Air Zone darts more. I bought an Airzone X Shot Dual and my older Airzone darts work better. It's kind of weird but the older ones get like, 5 extra feet for me. I don't know if its just my darts, but if you try doing this with your old darts compared to your new darts in a gun please tell me what happens.
I've seen these and bought these for my guns before. They don't have arrow refills for Nerf, but these arrows work fine for me. I found a 99 cent store that sells 3 for 50 cents! Check those for even greater deals on these arrows.
You have just took the hopper, and made it ten times better! This is a better, cheaper alternative and ill think about making when every time I make a hopper now!
Nice review and all but, how hard to prime is the Raider exactly after modifying it. I want to know because that would mean the whole purpose of slam firing is alot harder to do and slower. On a scale of 1-10, how hard is it to prime the gun?