I do apologize if I came in too strong with my comments. It was not my intention.
I believe there was only 1,800 or so Marines that was stationed in Lebanon between 1982-1984. There wasn't much to be left behind by the Marines. The arms assistant program did provide lots of weapons to the Lebanese government. You still see government troops using A1 or A2 rifles and US armored vehicles.
Hezbollah makes their weapons in their own home, business shops, schools, etc. Not a full blown weapon factory per said.
AK receiver are made out of 1mm sheet metal. You can buy AK flats for around $13.00-$50.00 each depending on where it came from without the needs for FFL transfer.
http://www.copesdistributing.net/ind...sort=2a&page=1
For AR, the lower can be built on any material that is strong enough to hold the the upper and trigger pack. I've seen pictures where the lower receiver was built with wood. They can get away with it because the lower receiver is stress free.
Here one that was built from a cutting board.
http://www.youtube.com/watch?v=3chSzLxPuzU
Anyway great site that back their information with proofs (picture still from movie). Keep up the good work!