The Winchester M1897 Shotgun is a firearm which Adam finds in the Mausoleum, using the dedicated Shotgun Shells. Just like the Colt-45, the M1897 was designed by John Browning. The model in the game actually is a 12 gauge shotgun whereas the real M1897 was also offered in 16 gauge. The M1897 evolved from the Winchester Model 1893 and was the first truly successful pump-action shotgun produced. It was used by U.S. Armed Forces during both World Wars and in the Korean War.
Adam: Shotgun. Winchester M1897 slide acion twelve gauge shotgun... To be exact.