The new 2017 receiver blank from Childers Guns now includes our original factory style spot welds, making it the most Advance option for the home builder in the AK market to date. With the installation of the lower bolt guide rails, full heat treatment, and full bends this new receiver blank lets you enjoy gunsmithing without all the hassle, cost and doubt associated with Heat treatment, bending and welding. In conjunction with our Layout Guides this makes the highest quality and lowest cost 80% Non-FFL AK receiver blank available. The 2017 receiver blank will be available in all of the selector markings and custom engravings we currently offer.
http://www.childersguns.com/AK-Receiver-Blanks-80-Percent-heat-treated