Harrington assault rifle (Earth-5875)

The Harrington assault rifle was the original standard issue infantry weapon issued to the UNSC Marine Corps from the Interplanetary War until 2371, where it was replaced with the M41A pulse rifle.

History
Under the Marine 70 Program in 2370, Jonathan La Fontaine, a retired veteran of the UNSC Marine Corps, was called upon to design a replacement for the Harrington assault rifle, then the Corps' standard issue weapon. While his prototype was met with stiff competition from other corporations, it was La Fontaine's weapon, designed from his humble workshop at home, which was chosen as a winner, being officially adopted as the M41 pulse rifle in 2371.