The

AR-16 The ArmaLite AR-18 is a gas-operated assault rifle chambered for 5.56×45mm NATO ammunition. The AR-18 was designed at ArmaLite in California by Arthur Miller, Eugene Stoner, George Sullivan, and Charles Dorchester in 1963 as an alternative t ...

was an American

battle rifle A battle rifle is a service rifle chambered to fire a fully powered cartridge. The term "battle rifle" is a retronym created largely out of a need to better differentiate the intermediate cartridge, intermediate-powered assault rifles (e.g. the S ...

produced by

ArmaLite ArmaLite, or Armalite, is an American small arms engineering company, formed in the early 1950s, in Hollywood, California. Many of its products, as conceived by chief designer Eugene Stoner, relied on unique foam-filled fiberglass butt/stock fur ...

History

The AR-16 was developed shortly after ArmaLite's previous rifle, the

AR-15 An AR-15-style rifle is any lightweight semi-automatic rifle based on the Colt AR-15 design. The original ArmaLite AR-15 is a scaled-down derivative of Eugene Stoner's ArmaLite AR-10 design. The then Fairchild Engine and Airplane Corporation d ...

. It was designed by

Eugene Stoner Eugene Morrison Stoner (November 22, 1922 – April 24, 1997) was an American firearms designer who is most associated with the development of the ArmaLite AR-15 rifle that was redesigned and modified by Colt's Patent Firearm Company (now known ...

in 1959 and unlike the AR-15, it was not intended for domestic use by the

US Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cla ...

; it was instead marketed towards emerging nations with a limited industrial base. The 7.62×51mm cartridge was selected for the AR-16, rather than the 5.56×45mm cartridge which had recently been standardized by

NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...

, because it was perceived that the AR-16's intended customers would be still reliant on 7.62mm and unwilling to buy 5.56mm rifles. In a marketing ploy, ArmaLite also emphasized that the

machine tool A machine tool is a machine for handling or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformations. Machine tools employ some sort of tool that does the cutting or shaping. All m ...

s used to produce the gun could be re-purposed for

agricultural Agriculture or farming is the practice of cultivating Plant, plants and livestock. Agriculture was the key development in the rise of Sedentism, sedentary human civilization, whereby farming of Domestication, domesticated species created food ...

and office purposes. The AR-16 was briefly marketed in the early 1960s but never entered full production due to a lack of sales. There was very little interest in the design, as most NATO member states were in the process of adopting the 5.56×45mm cartridge, and countries that were still using 7.62×51mm were largely satisfied with the

FN FAL The FAL (a French acronym for (English: "Light Automatic Rifle")), is a battle rifle designed in Belgium by Dieudonné Saive and manufactured by FN Herstal (simply known as FN). During the Cold War the FAL was adopted by many countries of th ...

. In order to adapt to the changing market, ArmaLite redesigned the weapon in 5.56mm; this evolved into the ArmaLite AR-18. Plans were made for several variants of the standard AR-16, including a 9mm

submachine gun A submachine gun (SMG) is a magazine-fed, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to describe its design concept as an autom ...

and a civilian sporting rifle. Ultimately, only a carbine variant was ever made.

Design

The AR-16 was a

gas-operated Gas-operation is a system of operation used to provide energy to operate locked breech, autoloading firearms. In gas-operation, a portion of high-pressure gas from the cartridge being fired is used to power a mechanism to dispose of the spent ...

selective-fire Selective fire is the capability of a weapon to be adjusted to fire in semi-automatic, fully automatic, and/or burst mode. The modes are chosen by means of a selector switch, which varies depending on the weapon's design. Some selective-fire we ...

rifle that utilized a rotating bolt. In order to facilitate for ease of production, the design of the rifle was kept relatively simple and it was made from inexpensive

sheet metal Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Sheet metal is one of the fundamental forms used in metalworking, and it can be cut and bent into a variety of shapes. Thicknesses can vary significantly; ex ...

pressings. The only machined components were the

barrel A barrel or cask is a hollow cylindrical container with a bulging center, longer than it is wide. They are traditionally made of wooden staves and bound by wooden or metal hoops. The word vat is often used for large containers for liquids, ...

bolt carrier A bolt is the part of a repeating, breechloading firearm that blocks the rear opening (breech) of the barrel chamber while the propellant burns, and moves back and forward to facilitate loading/unloading of cartridges from the magazine. The fir ...

, and a pair of

brackets A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'r ...

. The

bolt The BOLT Browser was a web browser for mobile phones including feature phones and smartphones that can run Java ME applications. The BOLT Browser was offered free of charge to consumers and by license to mobile network operators and handset manuf ...

, extractor, and flash hider could be machined but this was inessential. The carbine model of the AR-16 featured a folding stock.

Variants

9x19mm submachine gun

This variant of the AR-16 was planned to run on 9x19mm Parabellum, and to be a

. However, this variant was never made.

Civilian sporting rifle

This variant of the AR-16 was planned to be a civilian sporting rifle. However, this version was never made.

Carbine variant

This variant was the only one constructed out of the three variants. This variant had a folding stock, but no other major differences.

References

{{AR-16 derivatives 7.62×51mm NATO battle rifles Rifles of the Cold War Rifles of the United States Short stroke piston firearms