M700 how do I load BB's with out taking the magazine out

Hello I have been thinking of a way to fully load my kjw M700 with out having to take to magazine out and not doing it one by one. I just cant seem to think of any ways to do it other then a small tube with a slight bend in it.

I have been searching the internet for a few hours now but cant come up with anything.

Does anyone know of any place that has a "how to" for loading your m700 with the mag still on?


Thanks