An Expansion chamber is used on a gun operating on CO2. The CO2 flows out of the tank and into the expansion chamber allowing the CO2 to expand and warm up. This process increases the paintball marker's accuracy. The more chambers an expansion chamber has, the better it works.
Compatible with paintball markers from these manufactures:
32 Degrees makes the Icon and Rebel marker series, as well as the PT Extreme paintball pistol.
Action produces Sentinel (semi-auto), Illusion (pump), AM-4 (rec-ball) and Diadem (electro-pneumatic) paintball guns.
Air Gun Designs
AGD is best known for the Automag and Minimag.
Ariakon makes the Sim-4 and Sim-5 series, the Toro, and the Ariakon Combat Pistol.
Bob Long makes the Intimidator series, including the Alias and Dragon.
Afterburner, Avenger, Marauder, Talon Ghost, Striker
Diablo makes the Mongoose paintball gun series, as well as the Wrath, Vendetta, Slayer, and X.
Dye offers the DM4 and DM5 paintball guns.
Hybrid makes the Quest Numatrix and Rival Numatic paintball guns.
Indian Creek Designs
Indian Creeks makes the popular Bushmaster series.
JT USA makes the Quadra, Protium, and Tetra paintball guns, as well as the Excellerator series.
Kingman manufactures the popular Spyder semi-auto and electronic series of paintball guns.
PMIs extensive line of Piranha guns and the Razzor barrel.
Psychoballistics makes the Silver Bullet and Silver Bullet LCD, plus the Delta .68 paintball pistol.
Smart Parts makes the Impulse, Shocker, and Nerve paintball guns.
Syndicate features the Paradox series, Jinx, and low-pressure Misfit paintball guns.
Tippmann makes the popular A-5, 98 Custom, and Pro Custom
Genesis, Prodigy, Orion, and Revelation.
WDP makes the famed Angel line of markers
Worr Game Products
Worr (aka WGP) makes one of the most famous paintball guns out there the Autococker.
Zap makes the ZXS