Bottom line is no guns with riot shield. Era tried it once and it turned into cahos, if theres ever going to be a riot shield no guns. In exchange for no guns, a melee attack and ability to block melees along with bullets. However please do not make it to block explosives.
I would love to see era pull of a riot sheild. This would provide great gameplay and actualy give attackers a chance to get past gun walls. Also its gotta be cheap. Like 7k