Weighing just a shade over 6 pounds with an 18-inch barrel and carrying a 1-in-12-inch twist rate, the initial AR-180 was ...

Essentially an AR-15 ‘Lite,’ the AR-180 weighed just a bit over 6 pounds and had an 18-inch barrel with a 1-in-12-inch twist rate, perfect for the 55-grain .223 bullets that were most ...