[SauronOfMordor]

There are a ton of Marines in Iraq who are clearing houses who beg for shorter M-4s versus the M-16s that they have. A "battle rifle" in 30 cal would be damned near useless to them in Iraq. Of course, some Marines wanted the 30 cal for those "appraoch the city and fire from afar" shots.

Seems like, for house-to-house, the Marines would be better off with short-barrel shotguns

[PatrioticAmerican]

I would think they need the high capacity of the M-4. They do use shotguns for door knobs and other purposes, but I would want the 30 rounds in case door kicking becomes a gun fight.

Personal choice, I suppose.