...if it still leaks, you have one with the worry-ring. The oring that cannot be replaced located at pump tube and valve face. Diagram:
http://www.gunspares.co.uk/shopdisplayproducts.asp?id=24563&cat=HW40
See, that why I'll never buy the P3 again. Sure, the Marksman 2004 or the P17, but not the P3 or HW40.
"The majority of things in our lives are created by folks no smarter than the rest. Afterall, the world is comprised, and operated by C average people intellctually, academically, and morally. These people are often the great pioneers that set the precedent for what excellence should be."