Winchester 1912 pump-action trench shotgun 12bore

01. Original name Winchester Model 1912   
02. Other official names Model 12, or M12  
03. Popular names Winchester Perfect Repeater  
04. Chamberings 12 gauge, 16 gauge, 20 gauge, 28 gauge  
05. Designed by T.C. Johnson/John M. Browning; Winchester Repeating Arms Company  
06. Design date 1912  
07. In service date(s) 1912–1964, with special production runs until 2006  
08. Adopted by United States Army, United States Navy, United States Marine Corps. World War I World War II Korean War Vietnam War   
09. Production quantities nearly 2,000,000  
10. Mechanism internal-hammer pump-action, shotgun with an external tube magazine  
11. Weight   
12. Mountings   
13. Practicality in action   
14. Comments / Other information The Winchester Model 1912 also known as the 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 standard for pump action shotguns over its 51-year production life, from August 1912 until discontinued by Winchester in May 1964, nearly two million Model 12 shotguns were produced. Initially chambered for 20 gauge only, the 12 and 16 gauge versions came out in 1913 (first listed in the 1914 catalogue), and the 28 gauge version came out in 1934.