I was not aware of the thumb notches and the name etching, but otherwise I got it right.

So the closest I can come to ordering a knife like that, given that I don't want name etching, would be

1) Nickel silver single hilt
2) Aluminum and red (or black)spacers
3) Duralimin butt cap
4) Wrist thong
5) Thumb notches
6) Model "A" sheath (NHS)

Can I have squared off hilt and rounded but cap on this model?

Capt Chris thanks once again for answering all these questions, though they may be hypothetical they do a great deal to help me understand the Randall option system.