M2A3 Bradley Fighting Vehicle crew shoots the vehicle’s M242 Bushmaster 25mm Chain Gun during gunnery training at the Doña Ana Range Complex

Wow.

I don't know which way the  Army is going with the Bradley but forget survivability upgrades (for the moment).  This puppy needs a lethality upgrade!

25mm cannons are so last century.  Not sure if a 30, 35 or 40 makes sense but as things stand we're not keeping up with the competition.

My guess?

Go with the 30mm.  Quick and easy upgrade.  Tons of munition choices.  Should be affordable.

Will it provide overmatch?

Nope, but at least we'll be in the game.