A police officer armed with a semi-automatic gun stood guard.

Crimped cases do not exhibit this problem but can fail to extract in some semi-automatic guns.

Compared to semi-automatic guns only require the owner to be at least 18 years old.

It is a semi-automatic gun with vertical block breech.

A 9-mm semi-automatic gun was found on the bed beside the body.

There were gang members with semi-automatic guns and large numbers of them.

M-42 was a 45-mm Soviet light semi-automatic anti-tank gun.

The gunman fired a total of nine shots from his 9-millimeter semi-automatic gun.

The semi-automatic gun is not used too much for self-defense, as they usually hold only three shells.

He was alleged to be carrying two semi-automatic guns, hand grenades, and stolen cash.