its already got shit armor if vet 5 i think they deserve to survive, i mean cmon vet 5 rifle squad good fucking luck.
But -20% received penetration will not change anything because the most guns have a penetration modifier against a M10 which is clearly bigger then
1, which means that it will still get penetrated.
You will only see a slighty difference from a 50mm Puma or AT-HT and similiar wapeons.