Yeah this statement deals with temporarily using a conventional screw to pull the regulator out of a tube for inspection/adjustment/service/etc. It doesn’t have anything to do with the presence or absence of the grub screw.Maybe the M3 screw varies with applications. My Huma instructions for the FX Royale: "Unscrew the M3 screw after you have placed the regulator into the action. The screw is only to pull the reg out and is not needed for the proper functioning of the regulator".
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