The OG CN40 bars were sold long ago.
The new style is currently marketed by leftcoastsupply as others have mentioned...still an Aussie made bar to my knowledge. They are priced cheap and sizes are obscure because they basically bought out their inventory.
Swap tips on a .404 bar and embrace the .063 gauge chain
You have any 3/8" tips left?
The .404 bars are slightly taller than the 3/8 bars. So you cannot swap the tips from .404 to 3/8.
It's a fair amount to remove.