Maximum input(psi): 900
Output range(psi): 200-600
Gas type: N2/HPA or CO2
Does not come with it's own gauge, the gauge measures output psi. Gauge should be mounted on side where the spring can not be seen. Threading is 1/8" female and is a ASA vertical. Comes in Nickel or Black. Nickel usually costs more.
The Bob Long Torpedo Regulator is newer, so it should be commonly available, both new and used.