http://www.gunbroker.com/Auction/ViewItem.aspx?Item=538389865
$350
https://www.gunsamerica.com/965313434/ORIGINAL-COLT-AR-15-22-LONG-RIFLE-CONVERSION-KIT.htm
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=522251923
2 bids, did not meet reserve. Buy it now for $75
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=531441007
I don't know why hotmail squished everything together.