Shoots .50 caliber pepper rounds, rubber balls, or powder balls; Provides a practical solution for personal and family protection Easy to load; Just pull the follower back, insert six .50 caliber P2P pepper rounds, rubber balls, or powder balls and then slowly release the follower back Trigger safety is disengaged when trigger is pulled CO2 activation system houses your sealed 8g CO2 capsule so with a split-second tap you can activate and be ready to fire (CO2 NOT included. To ensure a proper seal and for best performance, Umarex-brand CO2 is recommended.)