blue Vintage Rene Cavalero Marseille Arbalete Champion Speargun

[Mitch77]

OK, that's weird.
Here is what I see at that link:
There is at least one in stock in every size.

My harpoon has two notches in it.
Do I measure for the longest, shortest, or in between to get the MM length...Org
do I ignore the notches and just go with the bbl length?

 

[popgun pete]

You go by the barrel length, the second notch allows a longer band draw. On the models with four sockets and mounting two set of bands the bands were all the same length, but the spear gave you a notch for each wishbone.

The difference in what we see is probably that it knows you are in the USA, whereas I am in Oz.