Clavit, preorders stopped for the items:
engraved tube
telescope
connector's inside pieces
full connector (with inside pieces in it)
Full AD cap
you can still
buy connector without inside pieces, you can still
buy all the things of an AD cap but not the inside pieces
To be more clear, preorders are stopped for:
engraved tube
telescope
all things that include connectors inside pieces. Those items are the inside pieces themselfs, the AD cap and the full connector