Two replies?!?! Come one, people! This is THE most helpful forum I have ever seen. Share some love for your brothers in arms! You just might make some Newbies day!
For you Mini-14 fans out there, here is a schematic from Midway. I used it before. You look at the picture, click on the corresponding number, and it takes you all the way up to where you can order that part. It doesn't get any easier!
http://www.midwayusa.com/General.mvc...~ruger_mini_14