FN Browning Auto 5 Operation

The Auto 5 is a recoil operated semi-auto shotgun designed by John Browning in 1898-1902 and produced starting in 1902. The A5 is available in 12, 16 and 20 gauge. Browning also sold the rights to Remington to produce their own version called the model 11 and the first guns were produced in 1905.