The XP 105 is an older version of the XP 110. XP 105 has a pressure guage (which is not totally accurate) , and that problem was fixed in the XP 110. XP 105 shots about 20 feet, and has a decently thick stream. The main disadvantage of the XP 105 compaired to the XP 110 is that the 110 tank is clear, so you can see how much water it has. This is a great gun!