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Description This ultralight and compact regulator from PolarStar stands 3 inches tall and threads directly onto the HPA tank. The MRS (Modular Regulator System) eliminates the need for a separate UFA and keeps your HPA set up to a minimal. With the oversized 4mm piston bore, this regulator allows a refresh rate even at only 40psi. The MRS additionally has an integral tournament lock which can be secured with a small-padlock or cable tie. Moreover, the output pressure can be adjusted from 40psi to 145psi.

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