The PolarStar MRS™ (Modular Regulator System) threads directly onto your HPA tank, eliminating the need for a separate UFA and keeping your air rig profile to a minimum — all in a package just 3 inches tall. Its integral on/off valve lets you depressurize the system before unscrewing it from the tank, protecting tank threads and o-rings from wear. An oversized 4mm piston bore delivers extremely high flow and refresh rate even at only 40psi, giving you consistent, high-performance output across the pressure range. Features Adjustable output pressure 40–145psi Optional High Pressure Spring boosts maximum output to ~200psi Integral on/off valve — depressurize before tank removal Oversized 4mm piston bore for high flow at any pressure Integral tournament lock — secured with a standard zip tie Compatible with standard HPA and SLP tanks Specifications Min Output Pressure: 40 PSI Max Output Pressure: 145 PSI (~200 PSI with HP Spring, p/n 10000556) Max Input Pressure: 900 PSI Outputs: 4x 1/8 NPT Warranty: 1 Year Limited HP Spring not included.
