Umarex's T4E TP 50 (formerly HDP 50) Pistol is a .50 caliber paintball gun that is perfect as a side-arm. Six paintballs are loaded into the magazine under the barrel, and the marker is powered by a carbon dioxide cartridge.
The marker is made to be safe and easy to handle, and also has a safety feature that prevents shots from being fired in case you drop it. The marker is powered by 12g carbon dioxide cartridges.
NOTE! Remember to never ever leave an "opened" CO2 cartridge in a paintball marker! After a game, make sure you empty all the CO2 in the cartridge, and remove the CO2 cartridge from the marker.