Overview of the AR-15 Rifle: Originally designed by Eugene Stoner in the 1950s for ArmaLite, the AR-15 is a lightweight, air-cooled, gas-operated, magazine-fed rifle. It is highly regarded for its versatility and reliability across various settings. The rifle is typically chambered in .223 Remington or 5.56x45mm NATO, although it can accommodate a wide range of other calibers.
Key Features and Customization: The AR-15 operates either through direct impingement or a gas piston system and has a standard magazine capacity of 30 rounds, though options range from 5 to 100 rounds. Its modular design allows for extensive customization with aftermarket parts like stocks, grips, handguards, optics, and barrels. The combination of aluminum and polymer materials used in its construction offers a balance of durability and light weight.