The APR was designed with constantly changing trajectories in mind. No matter what the distance is, you can easily adjust the rail so that your sight is always dialed in. Even people with an Apex can make use of this. Granted, paintballs aren't the most accurate projectiles but the APR can help eliminate some of the guess work.
Precision machined adjustable picatinny rail
Anodized flat black
Fast one handed adjustability from 0 - 5 Degrees
Two piece clamp on style mount
The only adjustable sight riser designed SPECIFICALLY FOR PAINTBALL
Used in conjunction with their patent pending R.O.C. stock you will be able to take FULL Advantage of your Red Dot or Scope like you never imagined