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Alliance Hobby 36 S ARCH AVE UNIT 2283
ALLIANCE OH 44601-6315
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Rebuild Kits for HPA PCP Hand Pumps
for Benjamin, AirForce & Hill MK3 MK4 Pumps

Benjamin & AirForce
  • 90 durometer o-rings for the Benjamin and Airforce PCP Hand Pump
  • Rebuilding the pump is fairly easy and can be tackled by anyone with basic tools.
  • Instructions are available at Sun Optic's website (the mfg of both pumps):
  • Video tutorials are available on all the common sites.
  • Unlike other sellers, my parcels will always have a tracking number.

Hill MK3 / MK4
  • Service seal kit for the Hill MK3 hand pump.
  • Regular maintenance is essential for keeping your Hill hand pump in proper working condition.
  • Includes micron filter, piston seal and all other exchangeable seals.
  • The MK3 hand pump has 3 rings on the top and bottom of the pump body tube.
  • Full service seal kit
  • For Hill MK3 hand pumps
  • Includes micron filter, 7 seals and other misc. replacement parts

Benjamin & Air Force Pump Rebuild Kit


Hill MK3 Rebuild Kit


Hill MK4 Rebuild Kit