On its first stage of materials, it is made from chrome plated metals and 316 stainless steels that is rust resistive. On the other hand, the Atomic Jet Seat is at high-flow piston first stage. The first stage is also optional factory sealed so that it would avoid contaminations from sand and silt. Nitrox are readily available for mixtures for about 40%, also, the first stage ports are capable for 2HP fixed/ 7 LP on fixed cap.