The first generation is a bit different in design, but use some
of the same o-rings as the Benji and modern Air Force pump. The first generation AirForce pump uses a collar at the base of the pump tube with the air filter fastened to ithttp://talonairgun.com/forum/viewtopic.php?t=9460
Give Kim (? I think that is her name) an email shout at Sun Optics. Tell her you need a seal kit for the pump that yours has failed. She, or they, will get a complete kit out to you. I was not charged for mine. Can't gurantee it will be free.
The pumps are a snap to repair. I am not sure why so many people shy away from the task and report horrible experience when they do it. The best advice I can give is to tear the pump completely down THEN replace the o-rings while you put it back together. Clean the parts as you go.
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