Stevens Model 520 and 620

As the Auto-5 began its successful run, John Browning continued to explore new shotgun designs and filed two patents for a "hammerless" pump shotgun with a unique take down barrel and a bolt that locked into the top of the receiver. Stevens Arms Company purchased the rights and began manufacturing the shotgun in 1909. One of the lesser-known Browning shotguns, the civilian version of the Stevens Model 520 continued production until WW2. Both the Model 520 shotgun and its streamlined successor, the Model 620, were adopted for military service, redesigned with shorter barrels, heat shields, and bayonet lugs, and lacking a trigger disconnector to enable slam firing.