What is it that you like about the classic A2 model? What are you going to do with this rifle?
I don't want to sway your opinion away from it if that's what you've got your heart set on. I know Colt makes good stuff. But *to me* $1400 is a lot of money for a no frills match/target AR.
Before buying any AR-15, I'd spend a few hours researching the (literally) millions of options available, from other manufacturers' complete or customized rifles, to "rolling your own," to "buying experienced."
Seriously - spend some time at ar15.com checking out the forums and build pic threads, and peruse the sites of the likes of: RRA, DPMS, S&W, Ruger, Sig Sauer, Stag Arms, LMT, Bushmaster, BCM, Wilson Combat, Armalite, Daniel Defense and any of dozens of others. Pick up a buyer's guide at the WalMart magazine rack.
You might find there are certain features or options available which you didn't know about, above and beyond the 'classic' A2 design.
The beauty of the AR-15 platform is that it is so customizable. Lots of guys buy a basic AR-15, then end up replacing half of it to change out stocks, triggers, grips, sights/optics, fore-ends, etc. By the time they're done they end up spending a boatload more to get what they really wanted than if they'd spent some (free) time researching first. I'm a big-time believer in "Do it right the first time."
If you do all the research and still want the A2, then by all means get it & buy with confidence. I'm sure it's a quality piece.