This is just a thought.....
Since the P250 is stamped on the FCU (the part that works with any caliber), wouldn't it be better to rename the tread and move it to the "General" category. To do this we will have to talk Halk into making a sub under General spcific to this. With it being under "9mm" some people may not post to the project. I didn't think about it until now because I have a .45, but it could be a 9mm, 357 or a .40 just as easy.
After even deeper thought, it could show us a pattern of when they made what.
Like I said, this is just a thought.