Ever tried clearing a building Maned? I have, and trust me, shorter and lighter is generally better. Admittedly, IF you see an enemy firing from a static position, and that happens to be a type of cover that a 7.62x51 would penetrate but a x39 would not then yes it would be better. But this is not generally the case. And if it is, that's why God invented medium machine guns and grenade launchers.
No, but actually, I agree with you for that sort.
For emergency, post-disaster "a looter has gotten into where I am", I have three things. An 870...with a folding Knoxx stock. A Saiga 5.56...with a folding stock. And the newer Daewoo...with a folding stock. Short is good indoors, that's just common sense. You whack against hallway walls, it could get you killed.
What I saw on the news looked like a running street gunbattle between police being fired on while still in their own police station (!) from AK-wielding sorts out in the street, and also fighting on the street where terrorists were busily blowing up things like a gas station and shooting at an occupied train station. It just looked like something that would work with a battle rifle instead, and since I doubt the police get heavier weapons, just that I thought it was a good call that they'd gone out with L1A1s for the street fighting instead of light weapons.
The trained military was the ones going into the hotel to do roomclearing. I couldn't see what they had, but I'd bet it was M-4's with the same stuff on the rails US forces use...that does work really well for that. The police just weren't getting their posteriors handed to them by being outgunned in the general outdoors fighting I saw.
