"lee's gun parts" in irving, texas is a good place to start. Llama stopped production on all their stuff in the late 1980's. Parts can be difficult to locate, but give mr. Lee a try. He has a website on the internet.
What he said. Lee is a great resource and a hoot to visit and jaw jack with.
Make sure you hit the directions link on his site, http://www.leesgunparts.com .
He's only open 3 days a week.