Lowers are mounting points, not stressed.
As long as the holes are right they don't matter much.
Especially if you use a drop in cartridge trigger.
MOA is the tricky part.
Ain't gonna happen with Ball. But you shouldn't be using that.
3 shots, 5, 10, how many for an average?
How about, "What AR will reliably kill a coyote at 250 to 300 yards?"
Pretty much any.
PSA makes guns that work, will hit coyotes beyond your requirements, and are reasonably priced. They do cut certain corners that are part of building
the most reliable, durable versions of the platform. That is why you can buy one for $500 with an enhanced trigger. Instead of $1500.
The enhanced trigger may or may not suit you.
Mine are OK. Replacing them wouldn't hurt, but isn't needed.
Watch out for weight.
What can be a light, handy gun often becomes a chunky pig.
