Winchester Model 1912
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The Winchester Model 1912, also commonly known as the Winchester 1912, Model 12, or M12, is an internal-hammer pump-action shotgun with an external tube magazine. Popularly named the Perfect Repeater at its introduction, it largely set the... Wikipedia
Action: Pump-action, Tilting bolt
Designer: T.C. Johnson; John M. Browning
In service: 1912–present
Manufacturer: Winchester Repeating Arms Company
No. built: nearly 2,000,000
Produced: 1912–1964, with special production runs until 2006