Where I live you are lucky to see 100 yards into the forest. I prefer the iron sights on my M-1 Garand. I hate the low capacity though, and would (almost) consider trading it for a nice M-4 variant. I think an M-1A1 upgrade is in order.
In an urban situation I'd opt for a 3 man team. 1 large caliber shooter with 1 spotter equipped with an M-4, and a "back door man" also equipped with an M-4.
With enough trusted individuals, you could build a nice squad around the 30-06, 5.56, and 12 gauge.
No shame in using scopes, they definitely serve a purpose.
