If you do not mind paying a bit over the top then these chaps have all the Crosman spares you will ever need! http://www.chambersgunmakers.co.uk/crosman.htm
This chap knows a lot about Crosman stuff, the site is worthy of a visit!
I have bought spares from him as well.
http://www.trobb.f9.co.uk/
“Political correctness is a doctrine, fostered by a delusional, illogical minority, and rapidly promoted by mainstream media, which holds forth the proposition that it is entirely possible to pick up a piece of shit by the clean end.”