Bravo Company USA has 10-packs of AR 30-rounders in stock for $170–if you’ve got the dough, it’s not too bad of a deal:
A fellow officer is looking to sell one of his personal ARs: a Doublestar carbine, with fixed carry handle, standard collapsible stock and handguard, *correction–not sure if chrome-lined, I’ll update if I can meet up and check* 1:9 medium-weight barrel. Comes with one 30rd mag, and it’s been shot very little. $1300, plus shipping if you’re not around mid-Missouri.
Email me if you’re interested: firstname.lastname@example.org
Palmetto State Armory has ATI polymer lowers in for $77 shipped: