No problem, we all start somewhere. Be aware, some sights are just not right for an AR application. Your's may be but if its range of adjustment won't allow cowitness with a proper height mount it may be defective. IF the mount is not correct (usually an AR mount is taller than standard to co witness the iron) it may just need a proper height mount. Not familiar with that perticular one. Be sure to use a rest and mark your starting position for the first group. Put the rifle back to the exact position and adjust the sight to the target. Works pretty well.

Edited because the Burris sight seems to indicate that red dot should work for you.