Electric guns are becoming more popular for self-defense.

The soldiers carried machine guns into battle.

Gun dogs are highly trained hunting dogs.

I grabbed the flare gun and fired it into the sky.

The electron guns in the cathode ray tube emit a beam of electrons.

The soldiers were armed with submachine guns.

The military is testing rail guns for long-range artillery.

The railroad guns were used during World War II.

The railway guns were used during World War II.

The smaller army was out-gunned by the larger enemy forces.