Which 'lower' for a just in case or a new build?
SO, if the lower is serial numbered, and I want to get one while I can for a future build, what is recommended?
Are there feature issues or choices that play into a decision?
I'm thinking a 5.56, but I could probably talk myself into a .308 unless the price gets in the way.
Lots of Cast Iron to Cook With...
and a few defensive firearms, too!