To power it up, just screw in a prefilled NitroAir N2 cartridge, load and insert a magazine, find your airgun target through the scope, flip the safety to fire, and squeeze the trigger. When you're low on air, loosen the bleed screw to relieve the air pressure, remove the empty cartridge, and install a new one! All without needing an expensive airgun air compressor, big air tank, or strenuous-to-use airgun hand pump.