I wouldn't be concerned about round count. It all comes down to heat and how well you
Makes sense. I will not be shooting larger annual round counts, nor will I be emptying mags quickly. In fact, I bought 20 rd mags for my Sport to lessen the temptation a bit. And, at $0.35 - $0.40 per trigger pull, I'll be firing for accuracy and effect - not to lay down cover in my neighborhood (I hope!).
Any AR I have or will buy will be HD first, range therapy second, and small game hunting last.
Lots of Cast Iron to Cook With...
and a few defensive firearms, too!