Welcome (back), M16A4

The humble original M16 was originally Armalite’s AR-15, and was first ordered for military service with a contract issued to Colt Firearms in May 1962 for the purchase of early Model 01 rifles to be used by Air Force Security Police.

Note, these guns had waffle-pattern 20-round mags, no forward assist, a thin 1:14 twist barrel, and the early three-prong flash hider.

Fast forward to the XM16E1, which became the M16A1 in 1967, and you started to come closer to the standard Army/Marine rifle used in Vietnam and throughout the 1970s and early 1980s. It used a forward assist and a 1:12 twist barrel.

By 1983, the M16A2 came about, it had a thicker barrel in front of the front sight, a modified flash suppressor (closed on bottom), a new polymer buttstock (lighter and stronger), faster barrel twist (from 1:12 to 1:7), and a spent case deflector for left-hand users. Considered downright vintage by the Army and Marines, the Navy still sports them these days.

M16A2- check
M9 in drop leg holster- check
Body armor- um, about that……

By 1998, the M16A4 was in play, primarily for the Marines, which had a removable carry handle, a Picatinny top rail to allow for optics, short rails on the handguard for accessories, and a 20-inch barrel with a 1:7 RH twist rate.

Note the size difference between the compact M4 Carbine, top, and the full-length M16A4 rifle, bottom. (Photos: Department of Defense)

Since the GWOT kicked off in 2002, the big shift over the years has been to move from the full-length M16 family to the more compact M4/M4A1 carbine, with its collapsible rear stock and stubby 14-inch barrel, leaving the increasingly old-school style rifle as something of a relic today. Heck, the Army for the past couple years has been very actively working on replacing their 5.56 NATO rifles and SAWs with a new 6.8mm weapon. 

Now jump to 2020, and the M16A4 is now apparently the Army’s designated rifle for Foreign Military Sales to equip overseas allies in places like Afghanistan, Iraq, Lebanon, and Nepal.

Colt and FN are competing in a contract to supply as much as $383 million smackers worth of M16A4s by 2025.

More in my column at Guns.com. 

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About laststandonzombieisland

Let me introduce myself. I am a bit of a conflict junkie. I am fascinated by war and warfare, assassination, personal protection and weaponry ranging from spud guns and flame throwers to thermonuclear bombs and Soviet-trained Ebola monkeys. In short, if it’s violent or a tool to create violence it is kind of my thing. I have written a few thousand articles on the dry encyclopedia side for such websites as Guns.com, University of Guns, Outdoor Hub, Tac-44, History Times, Big Game Hunter, Glock Forum, Firearms Talk.com, and Combat Forums; as well as for print publications like England Expects, and Strike First Strike Fast. Several magazines such as Sea Classics, Military Historian and Collector, Mississippi Sportsman and Warship International have carried my pieces. Additionally I am on staff as a naval consultant and writer for Eye Spy Intelligence Magazine. Currently I am working on several book projects including an alternative history novel about the US-German War of 1916, and a biography of Southern gadfly and soldier of fortune Bennett Doty. My first novel, about the coming zombie apocalypse was released in 2012 by Necro Publications and can be found at Amazon.com as was the prequel, Chimera-44. I am currently working on book two of that series: "Pirates of the Zombie Coast." In my day job I am a contractor for the U.S. federal government in what could best be described as the ‘Force Protection’ field. In this I am an NRA-certified firearms, and less-than-lethal combat instructor.

2 responses to “Welcome (back), M16A4”

  1. Alexander Magoun says :

    One day, the Smithsonian will put the interview transcripts and maybe even the videos online, but for now you’ll have to save the URL for the finding aid to firearms curator Ed Ezell’s videohistory of 20th century small arms development with Eugene Stoner and Mikhail Kalashnikov: http://siarchives.si.edu/research/videohistory_catalog9532.html. You can try requesting copies of the transcripts, which were created originally in WordPerfect, from osiaref@si.edu.

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