Special Force® Nitrogen Chargers filled at 1700 psi.
Same body and neck size as a standard 12g CO2 filled cartridge, except this one has been filled with clean N2 at a pressure twice as much as CO2.
Be warned, N2 is stable at all temperatures so it packs a huge punch even in very cold climates. The main difference you’ll see is that you will achieve several very powerful shots, but then the pressure drops off. So this is not for the economy shooter, you will not get as many shots as you would with CO2. However, the shots you do get will have twice the power. We keep our pellet rife (with laser) ready with a N2 charge in it for the squirrels that get into the plant. Hey, it’s more humane than a dozen pneumatic fired bb’s at the varmints head.