Those first two letters actually stand for “ ArmaLite Rifle,” named after the ... (depending on your perspective): the 5.56x45mm AR-180. The AR-18 entered the initial design phase in 1963 ...
However, long before the AR-15 was vilified by American politicians, another ArmaLite rifle was gaining ... on your perspective): the 5.56x45mm AR-180. Bartocci adds that the original factory ...