As you might guess from my screen name... My feeling is you need a Garand.
If you don't have one, you are really missing out. Aside from the historical aspect and all that, they are a joy to shoot and you won't be looking for a ton of accessories to add to it because there simply aren't any. It's also an -06, which isn't as sexy as a 6.5 Grendel with detachable mags, but you will be able to find the ammo anywhere and no one argues that it packs a punch. And the Garand is a hell of a lot stronger built than any AR you will find. Don't get me wrong, AR's are great guns - accurate as all get out and the design is genius, but they are not built out of forged steel like an M1 or an M14. The Garand is a true battle rifle.
M1Amen