Air Arms altaros regulator oring sizes for air arms s510

Hi I am resealing my airarms S510 and got everything done now I wanted to replace orings on the ALTAROS Regulator , If anyone knows oring sizes please let me know , I do not see what sizes they are and no info on ALtaros website , thanks LOU


here is what is inside so the plastic cap oring and the piston has 4 orings like 2 duplicate sets of two



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