M16A1 

The standard-issue rifle for U.S. Servicemen in Vietnam. Designed by Eugene Stoner as the Ar-15 to replace the M14 (which was difficult to control while in full-auto). The rifle fired .223 caliber ammunition, which later became the 5.56 mm NATO round in widespread use today. The M16A1 "spawned" the current U.S. service rifle, the M16A2, as well as the A3 (full-auto A2), and the M4 Carbine, which is in use by Special Forces units around the world.

The M16A1's jamming problems had nothing to do with the design of the gun, the U.S. Government had told troops that the rifle was self cleaning, therefore the troops were not issued cleaning kits until 1968. After the kits were issued, jamming reports were nearly unheard of.

M16A1 by My name May 17, 2006

M16A2 

one of the best standard issue assualt rifle in world... you just need to keep it clean.

The M16A2 ownz that ugly AK74SU!

M16A2 by Dean August 4, 2003

M-16 

M-16 is the military designation for a lightweight, magazine fed, gas operated, shoulder-fired weapon designed for kicking some serious ass. It was introduced by ArmaLite in the late 1950's as the AR-15.

The M-16 is an effective tool for negotiating with terrorists.

M-16 by Andre Oolah February 18, 2007

M16A2 

The most widely known rifle in the world(next to the Kalashnikov AK47), the M16A2 is not fully automatic, but fires in three round bursts that are perfect for clearing rooms or long range attacks.

The M16A2 is comparable to the Kalashnikov AK74su.

M16A2 by Detranova July 29, 2003

M16ed 

getting killed or killing some one with an M16, usually playing Call of Duty 4, or another game

hahah!! that guy just got M16ed

M16ed by Walking Pylon July 10, 2009

M-16 

Ok, I'll keep this simple for the people who dont like the technical bullshit.

The M-16 is the standard assault rifle of the U.S. military, and has been the standard for over 45 years. It is well known for its new design, accuracy, and reliability on the field. The M16 was made to be able to adapt to any given situation at the moment, and as a result it can accept a wide range of accessories and extra equipment.

Because of the facts above, the M-16 has been adopted by many other countries(UK,Iraq,Italy,etc.).

"The AK-47 is the best assault rifle in the world"......(Shoots target) Damn! I missed again!(trades for M-16).

M-16 by Proud American76 May 13, 2009

M-16 

The US Military's current weapon. It is accurate, a bitch to keep working, and lack stopping power.

If you want to let them die slowly, shoot them with an
M-16. If you want to put that fucker out like a light, blast him with an AK-47. A lot of people prefer the AK to the M due to the issues of the 16 lacking the stopping power and reliability of the 47. The M-16 bullet tumbles and fragments when it hits human flesh, resulting in severe wounds, but does not have the flat out damage caused by the heavier AK-47 bullet, which demolishes everything in its path.

M-16 by cogitator November 30, 2009