Historically, the AR15/M16 has not been without controversy and critics. As a military rifle, during early use in the Vietnam War, the M16 suffered from functioning problems due to a change in propellants and improper training of soldiers regarding cleaning and maintenance. Lessons were learned, refinements made and the M16 platform evolved into one of the most prominent firearms in military history. However, the M16 to this day is not without criticism, not so much due to the rifle, but because of the 5.56 NATO cartridge, that lacks the long-range effectiveness of the 7.62 NATO cartridge used in the M14...