Expansion chamber vs. Regulator

Both expansion chambers and regulators are used to in a sense filter and or regulate the air once its in the paintball marker. Lets start of with expansion chambers, they are used with Co2 (a type of gas to power the paintball marker (gun)). They come in 4, 6, or 8 chambers. What it is there is 4, 6, or 8 cone like shapes that’s trap the liquid from the Co2 and only lets the air out to the marker. Therefore keeping your paintball marker (gun) from freezing up and be damaged from the liquid. Regulators on the other hand are used with compressed air (a type of gas to power the marker (gun)). Co2 can’t be used because it fluctuates up and down and is inconsistent. Also all the o-rings the regulator contains will just freeze and ruin it. There are two types if regulators internal and external. They both do the same job. That is to give out the same amount of air for every shot boosting up you accuracy. There are many sizes for regulators small, medium, or big. One isn’t better that the other it just your own preference and how you want the gun to look like.