No name is known as well as Colt when it comes to reliability, accuracy, and performance in an AR. For years, The United States Armed Forces have put their confidence in the Colt to help them accomplish any mission. Colt is where “mil-spec” truly begins. With its 16.1” chrome lined 1/7 twist rate barrel, the Colt LE6920 rifle can handle almost any ammunition selection and stabilize popular heavy loads. A true M16 Bolt Carrier Group with a properly staked gas key and shot peened bolt is included. Like its combat proven brother, the Colt LE6920 semi-auto rifle includes the durable and adjustable post A2 front sight. A rear flip-up windage adjustable sight is also included. Don’t settle for anything less than the best.