4.5K N2 Ultra Light Reactor 4 Systems Features: Next generation ULTRA Light Weight DOT & TC certified carbon fiber cylinders "Made in the USA" Paintball industry standard 4500 PSI fill capacity with a user convertible 800 PSI or 450 PSI output pressure Reactor II regulators User replaceable Nickle plated Navel Brass Bonnet provides the most durable long life gas interface available All Pure Energy Systems are supplied with a user service parts kit and low pressure conversion kit Units are clamshell package and include a detailed instruction manual Pure Energy Reactor II regulators set new standards in the industry for flow, stable pressure output, and efficiency Both high and low pressure rupture disks installed for highest level of safety Top rated Pure Energy Stainless Steel V3.0 Fill nipple Pure Energy Reactor Regulators are installed by qualified technicians and meet or exceed all industry standards Five year retest cycle All components meet or exceed all ASTM, DOT, TC or CGA stan