Polarstar HPA Regulator Micro Reg Gen 2The Micro Reg GEN2 is a simpler and more efficient version of the original Micro Regulator. The updated version contains the same internal components as the UGS and CGS and only have only two o rings to ensure even greater reliability. Optional High Pressure Spring boots maximum pressure to ~200psi. Integral tournament lock can be secured with a standard zip tie. Compatible with standard HPA as well as SLP tanks. HP Spring Not Included Min Output