AR-15

Military abbreviation · Weapon and Military Equipment

AR-15
Stands forArmaLite Rifle, model 15
CategoriesMilitary

AR-15 stands for ArmaLite Rifle, model 15, a weapon and military equipment abbreviation.

Lightweight rifle design created in the late 1950s by Eugene Stoner at ArmaLite, which became the basis of the military M16 and M4. Today AR-15 usually means the civilian semi-automatic version, one of the best-selling rifles in the United States.

Example: The store sells AR-15 rifles from a dozen manufacturers in several calibers.

Usage notes

The "AR" stands for ArmaLite Rifle, the company's naming pattern (as with the earlier AR-10), not "assault rifle" or "automatic rifle." ArmaLite sold the design to Colt in 1959, and Colt still owns the AR-15 trademark, though many companies make compatible rifles called "AR-style" or "AR-platform." Civilian AR-15s fire one round per trigger pull, unlike select-fire military M16s and M4s.

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