[Jack In The Box]

I just wanted to check on something, I have some friends who are trying to put a team together for this event, they all have spyders, however, one of them has an MR2 and really doesnt want to have to buy another Spyder. Are the MR series Spyders allowed for this event. The only thing I have noticed is the fact that the MR2 has a switch on the back of the grip that changes the firing modes.

What are the conditions on this.
Thank you.