As title says. The M240 armed Stryker is rare in reality, I think only used by auxiliary/support units and instead should be armed with a MK19 CROWS as is correct for a Stryker platoon, 2x MK19/2x M2 CROWS. Plus for a vehicle requiring crewmen it's not the best deal.
This would also be a nice change if 40mm HEDP penetration capabilities ever get added later down the line.