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The original HK417/G28 stocks use a larger diameter buffer tube and therefore cannot be used on the CO2 inserts
The Kythera SA system can be configured for use in Gel Ball firing 7-8mm projectiles
Testing was done at 80psi and 120psi using a VFC M4 with a stock hop-up and 6
Can be used to used to convert G&P R3 to use PolarStar Stock Rails
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