1.075L of water
The Hammerhead is a 2007 Buzz Bee blaster that holds 1.075L of water, which is extremely good in terms of capacity as the blaster is quite small. It has the same pressure gauge as the Argon, and looks similar to a Stingray, as they both have an oddly-placed fill cap, in this case, the bottom of the blaster's handle. It was rereleased in 2008 under a new paint scheme, but was discontinued. It is classified as an Air Blaster.