: My recollection of the game is that you largely relied on the BR / DMR, and
: when you ran out you'd pick up a carbine or light rifle off of an enemy.
: There wasn't really any planning to it, and only a handful of times were
: alternate weapon choices beneficial.

I would love to've largely relied on the DMR, but I kept running out of ammo for the darned thing. Possibly there was more lurking around, but I sure didn't get enough of it on my two campaign plays, which made it frustrating.