Fill probe o-ring size for Daystate and Steyr
Seems to be a tightly held secret the fill probe o-ring sizes for the Daystate Regal and Steyr Challenge. Anyone have the sizes, material and hardness scale number used on these 2 brand o-rings? I just want spares trying to be prepared.
I think the Steyr ones are 5x1.5 but don't know what material or hardness