Analysis of information sources in references of the Wikipedia article "AR-15" in Ukrainian language version.
A lever above the grip on the left side of the receiver provides a selector for the trigger safety, semi-automatic and automatic fire. ... The AR-15 Rifle is a lightweight, gas-operated rifle equipped with a 20-round, detachable magazine. It is chambered for Cartridge, Caliber .223.
AR" comes from the name of the gun's original manufacturer, ArmaLite, Inc. The letters stand for ArmaLite Rifle — and not for "assault rifle" or "automatic rifle." ... The National Rifle Association estimates there are some eight million AR-15s and its variations in circulation, and says they are so popular that the "AR" should stand for "America's Rifle.
A lever above the grip on the left side of the receiver provides a selector for the trigger safety, semi-automatic and automatic fire. ... The AR-15 Rifle is a lightweight, gas-operated rifle equipped with a 20-round, detachable magazine. It is chambered for Cartridge, Caliber .223.