AR-15 type rifles are known for their ability to be accessorized. The Ballista Nautilus Rotating Rail allows you to change the position of any of your rail-mounted accessories in 45-degree increments. If you put an accessory on the bottom of a rail and you need it to be on the side, with the Ballista you can easily change that position. Made of high-grade aircraft aluminum, the Ballista NRR is well-made, durable and light. It can be a benefit in many different scenarios in both the competition/sporting world and the tactical/home defense environment.