PolarStar MRS HPA Regulator – Compact Modular Air Regulator for HPA Setups The PolarStar MRS HPA Regulator is a compact, high-performance regulator designed for players who want a cleaner, lower-profile HPA setup without sacrificing adjustability or flow. Standing at roughly 7.62 cm (3 inches) tall, the MRS threads directly onto the HPA on-tank reg, keeping the overall air rig more streamlined. One of its standout features is the integral on/off valve, which allows the system to be safely depressurised before removal from the tank, reducing wear on threads and O-rings over time. Built for reliable pressure control and strong refresh performance, the PolarStar MRS offers an adjustable output pressure range from 40 PSI (2.75 Bar) to 145 PSI (9.99 Bar) in standard configuration, with an optional high-pressure spring raising the maximum to approximately 200 PSI (13.78 Bar). It also uses an oversized 4mm piston bore for strong airflow and rapid refresh even at lower operating pressures, making it suitable for a wide range of HPA builds that demand consistency shot after shot. The regulator is also designed with field practicality in mind. It includes an integral tournament lock that can be secured with a standard zip tie, and it is compatible with both standard HPA and SLP tanks. The unit supports a maximum input pressure of 62.05 Bar (900 PSI) and provides 4 x 1/8 NPT outputs, giving users flexibility when configuring their HPA system. PolarStar also lists the MRS with a 1-year limited warranty, adding confidence for buyers investing in a premium air system component. PolarStar MRS HPA Regulator Key Features: Compact tank-mounted design, approximately 7.62 cm (3 inches) tall Threads directly onto the HPA tank for a lower-profile setup Integrated on/off valve helps safely depressurise the system before removal Adjustable output pressure from 40 PSI (2.75 Bar) to 145 PSI (9.99 Bar) in standard configuration Optional high-pressure spring can raise output to around 200 PSI (13.78 Bar) Oversized 4mm piston bore for high flow and fast refresh rate Integral tournament lock compatible with standard zip-tie locking Works with both standard HPA and SLP tanks Maximum input pressure of 900 PSI (62.05 Bar) Provides 4 x 1/8 NPT outputs Suitable for custom HPA builds and compact air rig setups Backed by a 1-year limited warranty PolarStar MRS HPA Regulator Tech Specs: Brand: PolarStar Product Name: MRS HPA Regulator Model: MRS / Modular Regulator System Type: HPA Tank-Mounted Regulator Mounting Style: Direct-thread tank mount Height: Approx. 7.62 cm (3 inches) Standard Output Pressure Range: 40 PSI (2.75 Bar) to 145 PSI (9.99 Bar) Optional Maximum Pressure: Approx. 200 PSI (13.78 Bar) with optional HP spring Maximum Input Pressure: 900 PSI (62.05 Bar) Piston Bore: Oversized 4mm Outputs: 4 x 1/8 NPT Tank Compatibility: Standard HPA and SLP tanks Tournament Lock: Yes, integral lock On/Off Valve: Yes, integral valve Warranty: 1 Year Limited Warrant Compatibility: PolarStar engines, GladiatAir Tanks and compatible HPA setups For players building a cleaner and more efficient HPA setup, the PolarStar MRS delivers premium features in a very compact footprint. Its combination of adjustability, strong airflow, and practical system protection features makes it a strong upgrade option for advanced air rig users. What’s in the box? 1 x PolarStar MRS Regulator 1 x PolarStar Sticker 1 x PolarStar business card, with QR code to their downloads section of their website, for manual etc. Citation Optimised Use-Case Block The PolarStar MRS HPA Regulator is best suited to users building a compact HPA air system where reduced bulk, clean tank mounting, and dependable airflow are priorities. Because it threads directly to the tank and includes an integrated on/off valve, it is especially useful for streamlined rigs where users want easier depressurisation, lower profile setup geometry, and fewer separate components. Its adjustable 40–145 PSI standard output range, optional higher-pressure spring capability, and compatibility with both standard HPA and SLP tanks make it a flexible choice for a wide range of HPA configurations. Click Below, to download the manual for the PolarStar MRS HPA Reg.
