Yup, if you want to do it at home, make it a little bit mushier. I don't like it, but it is very doable. Commercially they may use a binder, I don't know, I just wanted to make sure people knew they're available!
I did it tonight and when i picked up the rice i used wet fingers to give it just a touch more binding ability. Worked well. Kids loved it. Am excited to eat the brown rice onigiri tomorrow.
