The 20oz tank from Guerrilla is as rock solid as they come. A super reliable brass valve complete with burst disk for safety.
Guerrilla tanks are light weight using aluminum to save weight, the flat bottom makes for a good shouldering surface or the perfect mount for a butt stock.
Each tank comes with a burst disk designed to release pressure before any damage can occur to the tank from over pressurization. In addition Guerrilla Co2 tanks each have a detailed safety label explaining the hazards associated with handling a pressurized container.