Get 6 extra revolver shells for your Colt Peacemaker Single Action Army CO2 revolver. Each casing holds a single pellet. Casings are loaded just like rounds in a Colt Peacemaker Single Action revolver.Having extra shells provides for more trigger time and a fun experience. Note: This casing shoots pellets and is only compatible with the Colt Peacemaker SAA air pistol that shoots pellets. Not compatible with BBs.