As for the rest of your comments... the point is the rulebook states it outright that there are no ranged astral weapons (excepting mana spalls and mana critter powers).
Again no. It stated no known. We aren't talking about if something is in the rules but if it is allowed/not disallowed by the rules. They left it vague, and the argument can be raised.
All right, try this on for size: The vagueness of the rule statement was done
deliberately to allow GMs to decide if someone has invented what is
literally a Magic Bullet - a weapon that can be used at range in astral combat. In regards to
canonical Shadowrun, it has been stated in previous editions - and please do remember, we
are operating with a system that has a persistent background and an essentially stable
conceptualization of the world, however differently the crunchy bits to explain that world happen to be.
Previous editions have stated categorically that no, there are no ranged combat options for astral space, outside of spells or critter powers; a bow adept cannot shoot someone at range with a magic arrow, etc. etc. This made it into the 4th editions as 'no known', so as to give GMs the option of including those at their tables.
If, at your table, you want to have them, that's your option; keep it at your table.
In the Shadowrun standard canon, however, they don't exist. Period.