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The original HK417/G28 stocks use a larger diameter buffer tube and therefore cannot be used on the CO2 inserts
How It Works
Can be used to used to convert G&P R3 to use PolarStar Stock Rails
Vertical clamshell holes are pre-sized after printing — no drilling needed for those locations
MRS™ MODEL:MRS AIR RIG (W/ 36" BRAIDED AIR LINE) The original HK417/G28 stocks useThis compact regulator stands just 3 inches tall and threads directly onto the HPA tank. In so doing it eliminates the need for a separate UFA and keeps your air rig profile to a minimum. What sets this regulator apart from competing models is its integral on off valve. This enables you to depressurize the system prior to unscrewing it from the tank to alleviate wear and possible damage on the tank threads and o ring. Adjustable output pressure from