Palmetto State Armory has ATI polymer lowers in for $77 shipped:
http://palmettostatearmory.com/index.php/ati-omni-stripped-lower-receiver.html
Palmetto State Armory has ATI polymer lowers in for $77 shipped:
http://palmettostatearmory.com/index.php/ati-omni-stripped-lower-receiver.html