Adapted from the battlefields, US Forces have begun improving the tried and true Trijicon ACOG scope by adding a small red dot sight on top for close encounter missions. Trijicon now offers a similar combo package for the public. The ACOG scope allows accurate engagement at further distances and the top mounted RMR Type 2 provides faster aiming for close targets. The ACOG and RMR Type 2 are rugged, durable and, when combined, offers a winning combination for target engagement at varying distances with your favorite AR-15.