A pivotable shoulder stock for a handgun allows the user to aim and fire a handgun around the corner of a building or other obstacle. The user is able to fire with relative accuracy from behind a building or other obstacle using a mirror attached to the shoulder stock. The mirror can be adjustably positioned for viewing in order to fire the handgun at about a ninety degree (90°) angle in either a clockwise or counterclockwise direction. The mirror can be removed when firing the handgun in a linear direction similar to a rifle or for storage purposes. The pivotable shoulder stock is relatively simple to operate and can be quickly adjusted while under assault conditions.