The Barska AR Quad Rail ( 6.75" / 17.14 cm Length) is a lightweight yet durable forend accessory for mounting a bi-pod, flashlight, laser aiming device, rangefinder and other tactical gear. This Quad Rail will fit AR-style carbines. The 6.75" Picatinny rails include 14 sections and will accommodate gear with sufficient space for the operator to grip the forend. A two piece free-float tube design permits efficient heat dissipation and easy attachment to the carbine barrel.