Long the backbone of air power for paintball, the 12 ounce CO2 tank remains an extremely popular power source for entry to mid-level paintball guns around the world! Lightweight, simple and affordable, a paintball 12oz CO2 tank, when safely and properly filled, provides hundreds of shots to paintball guns like the Valken Blackhawk, GOG eNMEy line and Tippmann or Spyder paintball guns.