Are commercial airliner pilots armed and if so what are they armed with?

Well it depends on what country the plane has left from.

Say if it was a country they were leaving from or traveling to with a war happening for example the pilots would probably have handguns and there would be guards on the plane.

If the country that the plane was leaving from or going to was safe for instance Austria England Canada the planes pilots would probably just have tasers handguns or nothing at all.

P . S . most planes do have some sort of gun in them but they are not used very often.