I was going to suggest the same in a more impolite and less diplomatic way Brian. But from my experience here it is clear that some of the more learned owners/contributors/scribes don't have them either. The BEST $10 worth owners, contributors and scribes can invest in. And yes, even though it's 50 years ago tomorrow (December 17th 1965) that I passed out from Carlisle as a newly qualified Armourer I still have to refer to the parts lists and still learning.
I can see where you're coming from regarding selling parts Brian. You can understand about answering technical queries now!