There are many choke manufacturers than furnish these. Depends upon the model.
Browning made choke tubes.
Your browning sweet sixteen was made by browning in 1959.
Your browning sweet sixteen was made for browning in 1922 by FN of belguim.
your browning sweet sixteen was made in 1959.
Your browning sweet sixteen was made in 1962.
Your browning sweet sixteen was made by browning in 1963.
Your browning sweet sixteen was made by browning in 1961.
Your browning sweet sixteen shotgun was made by FN for browning in 1928.
Your browning sweet sixteen was made in 1963.
Your browning sweet sixteen was made by browning in 1953.
Your browning sweet sixteen was made by browning in 1949.