Absolute top tier competitors shoot ARs at 600m using insanely tricked out guns (floating hang guards, hand-lapped chambers, custom triggers) and hand loaded ammo where every piece of brass is trimmed to 0.0001" and bullet concentricity is checked w micrometers. 1000m, you say? https://twitter.com/cyberbiota/status/971607379405082624 …
"reach" is not the same as this poseur talking about "putting serious fire on tangos" and with stock ARs was the implication