Performance Series - HP8 HIGH Pressure Piston (800-850psi)Upgrade your HK Army Performance regulator with the HP8 (Low pressure 800 psi) piston. Enhance the performance of your regulator with this piston, equipped with a Belleville washer stack designed for precision and ease of use. This innovative component allows for quick and efficient adjustment of the output pressure without needing to purchase a completely new regulator unit. Simply remove the washer stack assembly and drop it into your regulator for
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Performance Series - HP8 HIGH Pressure Piston (800-850psi)