This is the First Strike Magazine. It will feed the Tiberius First Strike rounds or normal .68 caliber paintballs. This magazine only fits the Tiberius Arms T8, T8.1 or T9 Paintball Guns. Loads into handle. One CO2 fires 3 full magazines. Holds both the 12 gram CO2 plus 8 standard paintballs / first strike rounds. Valve automatically seals upon reload to save CO2. New quick punture tool integrated.