Out of the box, the X-Bolt rifle is an incredible shooter capable of incredible accuracy. For those of you looking to reach out a little bit further than average, the high-quality Browning X-Bolt 20 MOA Picatinny Rail provides you a solid lock-up to your action and an additional 20 MOA of elevation so you can dial in that much more drop on your scope before you have to start stacking MOA or Mils.