It's been almost 15 years since I fired a black rifle (and it was the M-16A1 in Basic Training).  I'm shopping for an AR now and really need some guidance on options.  My shooting would be divided between indoor shooting (50 yds), and a 100 yd outdoor range.  For such close ranges, is there a barrel I should be considering?  

Also, while I'm at it, any other recommendations for recreational shooting that I should keep in mind while I'm shopping?

Thanks!

M4-style ARs are very popular right now, and would do you just fine.

If you want the classic look, go with an A2 style AR.

Oh yeah, ummmm, get both!

ETA: 500!!!

16in should be fine

I like a 16"

From your description of your intended use, a 16" would do what you want it to do.

There are also different types to choose from, CAR, middy or dissipator.

I would go with whatever makes you happy. My first Ar I bought was a Colt sporter back  1996 that I built into a M4 during the ban. After the ban was lifted I bought a Colt A2 20 inch mostly because it was My issue rifle in the Marines. Be warned You will probably end up getting infected with the BRD
and buying more. I now have four and My fiancee is puzzled that I am looking at adding to the collection

Quoted: 16" Middy

+ 1

I have a RRA Flat Top 16 inch, but after two years of shooting it, I think I would get the same rifle but with 18 SPR barrel and 1and 7 twist, this is the most versatile setup IMHO, you can do CQB and Long Range work with the right optics setup.  

Put a nice scope on it 3x9 or 3x12 by 40 and also put a little red dot on it for CQB work mounted on a 45 degree mount from Yankee Hill Machine or get the mount that puts it on the scope.  This has you covered from 0 to 700 yards.  All you have to do is change ammo, for close range use the xm193 for long distance use 77 grain Black Hills Load.

The best part of this setup is range days.  Shoot some quick 25 yard stuff, then shoot some 300 yard stuff and be more accurate than the bolt action guys who havent improved their rifles.

16" midlength 1/7" heavy.