Regulator Pressure Test Port Upgrade

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 

When re-fitting, NEVER leave the o-ring  in and then replace the  plunger, this may damage the o-ring. Always  follow steps 2 & 3 above.