This was an experimental weapon at the time of the war. Manufactured, primarily, from high-strength polymers, the weapon is almost indestructible. It's light, fast firing, accurate, and can be broken down without the use of any tools.
This weapon is superior to both the AK47 and the M16A1, but the magazine is inferior to both rifles.
The Enfield does much more damage than the M16A1, but the M16 has a much farther range, (enough so that you can burst fire in the M16A1 farther than you can shoot single rounds in the Enfield.)