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Break action shotgun models were popular during 1800s mainly for hunting -
Browning developed his Model 1887 Lever-Action Repeating Shotgun and sold his design to the Winchester Repeating Arms company. -
In 1892, a fellow by the name of Spencer introduced the pump shotgun to American hunters. -
The Browning Auto-5 was the first mass-produced semi-automatic shotgun. Designed by John Browning in 1898 and patented in 1900.