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This guide assumes the reader has working knowledge of the HW100 e.g. how to remove the stock from the action etc..
To use this guide, the original Grub Screw, Ball Bearing and O-Ring should be removed from the Regulator Pressure Gauge Test Port. Sometimes the ball bearing will drop out of the hole BUT that does not happen very often. If the ball bearing does not drop out, then you will need to dismantle the regulator and pop it out with a small Allen key - the HW100Tuning Pressure Gauge Test Port Upgrade was designed by us to negate ever having to do this again. If you need any help getting the ball bearing out, try this guide: HW100 Regulator Tweaks