For the people that wouldn't take the AR first, why is our military using that configuration if it is that inadequate?
People choose .308s over .223s for "one rifle" because you can kill a wider variety of game and do it at longer ranges with the .308. This makes it more versatile.
Yes, .223 is lighter, the mags are smaller, hold more rounds, and weigh less. I know this. I've slept with an M16 in my sleeping bag more times than I can recall. Yes the military (including myself) uses M16 variants as its duty rifle.
However, simply put,
I don't care. If
I'm shelling out the bucks for the rifle, I'm going to get what I really want, and in my case, that's the FAL.
Do NOT choose your weapons by what the military uses. How limiting is that? I have no desire to buy a Beretta 92, but that's what the troops are issued. I don't want a Sig P226, either. But the SEALs use it. Sure, it's a great pistol, I just don't want one.
The whole "SHTF" scenario was debunked quite thouroghly by Correia back on TFL, after an unpleasant rash of such threads. In the event of some kind of urban riot scenario, you'd most likely be sitting at home with your gun protecting your family and property, not running around alone.
I'm going to be buying a vest that allows me to carry either eight or twelve (I haven't decided yet) 20rd FAL mags. That's 160 or 240 rounds of .308 at my disposal. More than enough for most foreseeable adventures. Weighs a lot, yes, but it still weighs less than my SAW.
At any rate. Yes, the AR-15 is a great rifle (mostly...I've dealt with some Hydra-Matic M16s that I'm not fond of) and is fun for plinking, target shooting, 3-gunning, and just about any defensive situation in which a rifle might be called for. If you want more power than the standard .223, get a .458 SOCOM or .50 Beowulf upper for it (just have a reloading setup ahead of time).
However, having owned two and dealt with more than one genuine GI M16, I can say that I'm bored with them and have no real desire for another one. *shrug*
And Chris...while I don't mind a pretty rifle, I agree on the Remington 7400. It's a fragile, overly complex, difficult to take apart weapon with poor sights and a poorer manual of arms. A good Garand beats it in every way, I think.