Here’s a pretty sweet poster I spotted over on Amazon. It displays all the major components of the AR-15/M4 platform rifle as well as a guide to field stripping and cleaning the rifle. It goes for $14.99 on Amazon.com.
Here’s a cool Assault Rifles & Carbines poster I posted about a while back too.
I have one of these posters up in my shop for my customers that are new owners of an AR-15. This poster is clear and easy to view. I actually suggest my new owners to purchase one. Please check us out at http://www.jlfirearms.com.