All the M16/M4/5.56 detractors on FR shouldn’t be worried about this at all.
Detractor? I have been one, to a point , but for a light close in fighting weapon, I give it a b+.
Where you have long ranges and/or fortified baricades etc. I’d take an M-14 or FN/FAL or an AR 10(stoners ideal weapon).
I have a brace of garands and a 1944 built bone stock 1911A1(I’ll definitely take that over an M9). The big heavy awkward battle rifles are still my first love. But dad was issued an M1 carbine which was far more anemic than the 5.56. So things change....and I move forward cautiously.