That was my thought as well, but after a quick glance at my favorite resource, it might be harder than you think.
http://www.riflegear.com/c-94-stripped-lower-receivers.aspx?pagenum=1
Call your local shops you may still find one in stock.....and don’t forget magazines and ammo. Used metal mags at surplus shops work just fine and can be had for cheap. You can get your other rifle parts later.
I see they have AK stripped receivers, pretty easy to build, even have directions on utube. More reliable than the AR IMHO