I wouldn't change from what I used before as far as snipers anyway.
M87ELR for Commandos, SASR for Mercenaries.
Pistols change definitely though, rather than 226 and Model 18, I'm packing DE on both sides.
Um, I've gotten 1sk DE hits on the body yesterday, so I'm sure it's not legs only. Maybe people started wearing heavy armor on their body because of the DE/sniper 1sk.