Yes they did!

[Unclad Lad]

I've been contemplating an EBR for a while, and I think I've found the ideal lower:

http://3.bp.blogspot.com/-JBs_iYIdfds/UBtC7aD99OI/AAAAAAAAOPE/KYWPZxDjca8/s1600/AR15+Obama+lower.jpg

http://palmettostatearmory.com/index.php/firearms/receivers/hope-and-change-lower.html

[Sport]

All I can say is AWESOME! Thanks for posting.

[Thornapple]

I was reading an article where someone used a 3D printer to print a plastic lower. Then purchased all the other parts to an AR online, which anyone can buy. Assembled it, and had a working unregistered AR.

(Notrecommendinganyonedothatjustpointingoutaninter estingarticlemyassisnowlegallycoveredsoscrewyouyou can'tsuemeforsayingwhatIsaidasitsjustforinformatio nalpurposesandshouldnotbetriedathomeunderanycircum stancesalsoIboughtanewpairofpantstodaybutyouprobab lydon'tcareaboutthat)

[Sport]

You could also look at getting an 80% lower and finishing it yourself.