The M2A1 is an enhancement to the .50-Cal M2, including a modified barrel, barrel extension, barrel support, barrel handle, flash suppressor and a fixed headspace and timing configuration. The M2A1 is an automatic, recoil-operated, link-belt-fed, air-cooled, crew-served weapon; capable of firing single-shot and automatic; and capable of right- and left-hand feed. The enhancements increase durability and Soldier safety moving the headspace and timing adjustment task above the operator level, thereby minimizing malfunctions and injuries in the field.
