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. |