[pmulcahy11b]

If you troll the net here and there and read magazines like Small Arms Review, you'll find a lot of firearms that can be easily made, though some are dangerous to their shooters. Almost every war that has featured asymmetric warfare has has one side armed with makeshift weapons or weapons built in garage shops. Oh, and I'll say it again, a $9 a month subscription to Scribd will net you a gold mine, of such things and others.