Chambered for the venerable and powerful .30-06 cartridge, the BAR is, of course, a John Browning design, created in 1917 for the American Expeditionary Forces in Europe who were fighting World War I. The idea was to have a powerful hand-held rifle for the application of “walking fire” or “marching fire,” a mobile rifleman fighting in and between the trenches that dominated the battlefields of the time. The selective-fire (full auto or single fire) BAR functioned superbly for that purpose, replacing the inferior French Chauchat and the English Lewis Gun, but as an air-cooled weapon with a difficult-to-change barrel, it had its drawbacks in protracted combat. The BAR weighs about 15.5 pounds unloaded and carries either a 20- or 40-round magazine, which, with a rate of automatic fire of about 550-600 rounds a minute, means that the ammunition in each magazine can be exhausted almost instantaneously. The BAR saw action on most of the battlefields from 1918 to the late 1950s and into Vietnam, but in the end, its “neither fish nor fowl” nature led to its being replaced by the M60— a full auto-only, belt-fed machine gun—a very different creature indeed, for a post-trench warfare world.