Universal M1 Carbine Information
Want more detail on Universal? Here's an excellent history of the
Universal company, along with details on the various versions:
http://www.m1carbinesinc.com/carbine_universal.html
These are the pages I've put together:
Universal M1 Carbine History, Variations, and Compatibility
Universal M1 Carbine Operation and Maintenance Manual
Universal M1 Carbine Accessory Catalog - Yeah, Baby!
Mounting a Scope on the Universal M1 Carbine
Best Parts Sources for Universal M1 Carbines:
Universal parts on ebay (not very pro-gun, but sometimes the best source for obscure parts). These aren't my parts, just what's there now. UPDATE: ebay has banned listing of a wide variety of gun parts, so it's pretty slim pickings for these.