What is a very accurate paintball gun?

for each single shot markers themselves are not any more accurate than any other marker, the barrel can help with accuracy and shooting good paint is the easiest way to improve your accuracy. player skill is also a large determining factor, now if you are shooting a string of paint you are going to want a marker that has as little kick as possible so you can hold it as steady as possible, in which case look into a spool valve marker as they have the least kick out of any design