I first got my p250 in a full size 45. I liked it ,but it was just that...a full size 45. I have since bought the sub compact 357 sig expansion kit and the compact 9mm kit. I must say, I love this gun. I prefer to keep it sub compact 357 sig but ,yes, ammo is a bit steep. It is perfect for this ammo shortage as I have more choices to shoot when I do come across ammo.