Package bundle: Piercing locking cap, air connector.
This add-on will allow you to increase the number of consistent shots per load, up to 25, by installing 2 additional CO2 cartridges into the stock.
How it works? Put 2 CO2 cartridges facing to the opposite directions into of your stock tube, pierce it by turning the rear cap, and shoot 15 consistent shots.
After 15 shots, pierce the third cartridge located in the QRC, and you will have another 10 shots. Reload of all 3 cartridges will take not more than 15 seconds.