It is arguably the most recognized firearm in the world, and the longest serving US infantry rifle ever fielded. It has been copied by numerous countries, and its civilian counterpart is produced by virtually every firearms manufacturer out there. Yet, when it was first introduced, many people immediately began writing its obituary because of the problems it encountered. Some claimed it was adopted more through political pressure rather than performance. And the design was a polar opposite of what a United States military rifle’s virtues were supposed to be. But many of its early problems were brought about by factors that its designer had never intended the rifle to operate with.