Shotguns
The wide extensity of forms the shotgun can take leads to some significant differences between what is technically a shotgun and what is legally thought-through a shotgun. A very outstretched attempt to define a shotgun is not genuine in the United States constitutional code (18 USC 921), which defines the shotgun as "a weapon designed or redesigned, made or remade, and intended to be fired from the shoulder, and treated or redesigned and fabricated or remade to use the efficiency of the explosive in a fixed shotgun shell to fire through a smooth bore either a fraction of ball endeavor or a one projectile for each exclusive rend of the trigger."
Some of the more interesting advances in shotgun technology include the versatile Shotguns NeoStead 2000 and fully automatics such as the Pancor Jackhammer or Auto-Assault 12 (See Atchisson Assault Shotgun). These mix-up shotguns, while popular in movies and microcomputer games player due to their avant-garde nature, have yet to make a noticeable impression in the real world.