What does the Communist Manifesto mean by the statement that the bourgeoisie has forged the weapons that will be used against it?

In chapter
1 of the Communist Manifesto, Marx provides the rationale for why the
proletariats, or working class people, would eventually overthrow the mechanism of society run
by the Bourgeoisie:

The price of a commodity, and
therefore also of labour, is equal to its cost of production. In proportion, therefore, as the
repulsiveness of the work increases, the wage decreases. Nay more, in proportion as the use of
machinery and division of labour increases, in the same proportion the burden of toil also
increases, whether by prolongation of the working hours, by the increase of the work exacted in
a given time or by increased speed of machinery, etc.

Therefore, as labour conditions become less favorable in relation to wage, the Proletariat will
find their work unacceptable and incite a revolution. The nature of the weapons you refer to is
influence over capital, that which has diminished in the Bourgeoisie class as a result of the
end of feudalism. Essentially, the working class now hold...