XP 40: 6/10 class: pistol uses: backup, sidearm The XP 40 is basically an XP 20 in a larger package. It doesn't seem to have quite the same mobility or range as the 20 but is still a pretty good choice for a sidearm although the 20 is a better one since it packs all the power of its bigger brother in a smaller package. If your really little then I would recommend this as a main weopon. Pretty good though.