IDPA grip question

[silverado]

Can anyone tell me if this grip will be legal for IDPA SSP/ESP?
http://www.amazon.com/dp/B0057IP1PO/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=3DGFZXWB8QHYW&coliid=I3LSERQWQKT4Z9
I have been shooting what are basically "beginner IDPA" matches locally, and want to improve the grip on my m&p 9MM and use that for real IDPA. I have the same(ish) grip on my 92 and love it.
Thanks in advance for the replies :drinks:

[GARD72977]

Not positive but I think it would put you in ESP. If you are already there even better. The good think about it is if its not legal you can just take it off.