So... My friend has two stripped lowers. He already has A Colt and a Windham Weaponry AR, both in 5.56. He likes them the way they are and has no plans to change them for reasons of his own. One has a carry handle and iron sights, the other a red dot.
My thought is set one up with a longer barrel, perhaps in .223 Wylde, for slightly longer range shooting, and the possibility of taking coyote if the urge hits. Living in Ohio, it seems .350 Legend might be a good choice for the second. Both offer good ammunition availability, require nothing exotic (he's not really a "tactical" kind of guy), but do offer practicality.
Thoughts?