Thanks for the report. I just ordered 2 for my p2000.
I also tried the 17 round Vp9 follower and spring and floorplate in a uspc 9mm magazine body. (Second picture above. the one on right.).
This allowed me to put in 2 more rounds. Last round was tight. Might work better with uspc 13 round 9mm spring. But I have not tested.