Any problems with the ruger KP345PR?

I am eyeing a Ruger KP345PR (PR=Pic rail). The plastic seems stronger than the glock plastics-no flex and very hard. My only concern is about the plastic rails, does anyone know of some test or someone putting over 4000rounds+ down range without breakages? I like the frame to slide fit (despite the very hard plastic rails), trigger, deer and the sights, very comfortable too. Does anyone have personal experience with this pistol? I have seen reports of them shooting 1 1/2 inch groups at 25yards-I'm convinced it has good accuracy.