Just got the air venturi avenger .25...then to make it right for me,additional.DONNYFL adapter and .30 RONIN,eagle view ADJUSTABLE scope mount,for the PARD 008 nv scope.add HADES and the BOG deathgrip tripod...WOW .but I know that I'll be needing bolt probe o-rings as well as complete o-ring kits.any body have a list of all the O-RINGS in mm ...would like to see it posted ...Michael,out