First, excluding a total societal collapse, I'd never take anything requiring a stamp any where near a potentially sporty event. To the greatest extent reasonably possible, I choose to avoid places that could become "interesting".
But if I expected conditions such as those and could choose an AR type friend to accompany me:
11.5" braced pistol.
Very bright light, probably 1000 lumens.
LPVO on top.
Offset Micro red dot.
Very good modern 2 point sling.
Ammo, probably coupled mags, one with 60gr NBT and the second with 64gr BSB.
Last edited by antelope_sniper; 09/01/20.