Nice gun! I'm not sure if you're experienced with shooting an AR or not so you may or may not know this. I see a lot of guys make a common mistake when they shoot the AR causing them to have large groupings. If you want to shoot tight groupings, make sure you flip your rear sight so you're looking through the small peep hole (I noticed on your video that the large peep was up). The large hole should only be used at night if you are unable to see through the small one. Figured I'd save you the hassle of figuring it out if you didn't know.
“How strangely will the Tools of a Tyrant pervert the plain Meaning of Words!” – Samuel Adams