The M16 assault rifle was originally designed in 1957 by Eugene Stoner as the AR-15, a 5.56x45mm variant of his earlier and unpopular, AR-10 rifle in 7.62x51mm. It was accepted by the U.S. Army in 1961 and saw use in Vietnam, where it was generally unpopular due to fouling problems caused by the weapon's direct gas impingement system and the adoption by the United States Army of a new type of propellant the weapon wasn't originally designed to use. In addition, the weapon was distributed along with literature that stated that minimal or no cleaning was necessary, which turned out to be false. This led to the design and adoption of the M16A1, which featured a forward assist. This feature, combined with regular maintenance of the weapon, helped alleviate jams and other problems caused by fouling.
The M16A2 rifle was adopted in the 1980s. This variant replaced the fully automatic capability of the M16A1 with a three-round burst option, in order to conserve ammunition while still providing troops with ample firepower. The M16A2 was followed by the M16A3, which reverted to the full-automatic option. It was not adopted in large numbers.
The current version, the M16A4, features a Picatinny rail for different sighting solutions, and retains the three-round burst option of the M16A2, replacing the full-auto option of the M16A3. It also features a rail under the hand guard for other attachments. The M16A4 is currently used by the United States Marine Corps.
This Airsoft replica model offers Safe, Semi-Auto, and Full-Auto fire. It features an FN Metal Body Kit, with original manufacturer markings as well as the original fire selection markings showing, Safe, Single and Burst modes.
The fixed stock is able to hold an 8.4V 1700mAh Large Type battery, the gun comes with a 130 round high capacity magazine. The G&P M16A4 is capable of delivering BBs at up to 380 fps.