O Brother, Where Art Thou?
The following firearms were used in the 2000 film O Brother, Where Art Thou?:
Browning Auto-5 Riot Gun
Browning Auto-5 riot guns are seen carried by the prison guards and some of the deputies.
12 Gauge Double Barreled Shotgun
Prison guards also carry 12 Gauge Double Barreled Shotguns.
One of the Sheriffs carries a Remington 870, which is anachronistic for 1937.
Several of the posse chasing the gang carries Thompson M1928 submachine guns. George "Baby Face" Nelson (Michael Badalucco) also carries a Thompson, referring to it as his "Choppa" and using it to fire on police and cattle, several times clearing jams.