Yes, it should fit. The second spring doesn't have a hole in the grip, so it can be tricky to keep aligned.
I bought it for my MPX. Does not fit. Also, no hole for the second spring. There is a rectangular mount on the MPX for the grip to screw onto. The MPX steel shank is wider than the plastic opening in the grip. It doesn't fit my MPX. I purchased it thinking it would. Now I have an extra grip laying around my shop.