What is xm16 e1?

The XM16 E1 is a variant of the M16 rifle, which was developed by Eugene Stoner in the 1950s. It was designed to be a lightweight, high-performance rifle for the US Army's soldiers. The XM16 E1 was the first version of the M16 adopted by the United States military, and it was used in combat during the Vietnam War.

The XM16 E1 features a 20-inch barrel, with a lightweight aluminum alloy upper receiver and a plastic lower receiver. It is gas-operated, featuring a direct impingement system that uses the hot gas from fired cartridges to cycle the action. It has a single-stage trigger and a 30-round magazine.

The XM16 E1 underwent several upgrades over the years, including changes to its sights, handguards, and buttstock. It was eventually replaced by the M16A1, which featured a forward assist and better barrel chrome plating to increase durability. Despite its limited service history, the XM16 E1 played a significant role in shaping the modern military rifle, and its impact can still be seen in the current M16 design.