Rebuild kit for Hill MK5

Brand new member here. Fairly new to PCP. I've got a Benjamin Marauder 22 and a Benjamin Bulldog 357. Where's the best place to get a rebuild kit for the Hill MK5 hand pump?? Or more specifically, the little green oring on the end of the small piston. Currently a kit on order from Pyramyd Air. I've tried different orings, and they won't begin to work in high pressure. I like the hand pumping, may get an electric pump one day, but am happy to fill by hand for now. Thanks for your help.
 
I think you ordered from the best site Pyramyd Air, it's my understanding that Pyramyd Air/air venturi are same company or sister company? Air venturi I believe is the importer of Hill in the US, or something along those lines.

Welcome to the site!
Thanks. I stumbled on to Pyramyd Air some time back and have been taking advantage of their buy 4 pay for 3 boxes of ammo. Since I wrote that, I've done a lot of looking at o rings. Grainger has a huge selection of o rings and I've ordered some to experiment with, from the very hard #90 to the abrasion resistant HNBR. It's always that little one on the end of the high pressure piston.....
 
  • Like
Reactions: Str8tshooter