The varied armament she could carry was outstanding, here's the list:

STANDARD:
4 x 7.7mm Browning machine guns in nose
4 x 20mm Hispano cannons mounted under the nose

OPTIONAL (Model Dependent):
Between 500lb and 4,000lb of internal stores in bomb bay (reconnaissance equipment, specialized mission equipment, leaflets, munitions, extra fuel, etc...).

1 x 57mm autocannon in nose (in place of 4 x cannons).
4 x 7.7mm Browning machine guns in underfuselage gunpack.
2 x 250lb / 500lb bombs underwing
8 x High-Explosive, Armor-Piercing rockets underwing.
1 x Torpedo externally held under the fuselage

Amazing for a 99% wooden aircraft, shows what the Merlins power had to lift it all!