The "A" in AR-15 stands for Armalite, the company where they were originally designed and manufactured. The first rifle they produced was the AR-1, a bolt-acti

The "A" in AR-15 stands for Armalite, the company where they were originally designed and manufactured. The first rifle they produced was the AR-1, a bolt-action rifle. https://en.wikipedia.org/wiki/ArmaLite#Products https://en.wikipedia.org/wiki/ArmaLite#Products