|Originally Posted By ViniVidivici:
5.56 is the way to go.
Plenty of "stopping power".
Light recoil, very fast shot-to-shot times.
Ammo is cheap, great variety, readily available all over the place.
Ammo is small and light, enabling you to carry more, should you need to.
I can see having an AR in a "non-standard" caliber, for special purposes, ONLY if you already have at least one in 5.56.
The 5.56 AR, especially a 16-incher, is one of the greatest "general purpose" long guns in existence, I feel.