An AR-15-style rifle is any lightweight semi-automatic rifle based on or similar to the Colt AR-15 design. The original ArmaLite AR-15, its predecessor, was a scaled-down derivative of Eugene Stoner's ArmaLite AR-10 design and featured selective fire. Tech Zoo #rifle #machine #design #technology #mechanism | Tech Zoo

Police: Suspect was shooting AR-15 in his front yard before 5 people killed

What Is An AR-15? History Of The Semi-Automatic Weapon

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Best AR-15 Piston Uppers And Conversion Kits – 2020 Picks - The Prepper Insider