Fosbery's Pump Shotgun: An AR15 Bolt in 1891
This entry details the unique 6-lug rotating bolt mechanism of the 1891 Fosbery Pump Shotgun, as explained by firearms historian Ian McCollum. It highlights the advanced design for its era, predating modern AR-15 bolt technology, and its historical context within firearm innovation. The shotgun's lack of commercial success due to prevailing preferences for break-action designs is also noted.





