In case you need some more gun stuff to look at you may want to check out these Brownells specialty catalogs. They are located on the right side of the page linked below. Best part is they are free.
http://www.brownells.com/aspx/NS/Store/ ... aspx?p=315
I just received the 1911 catalog and the AR15 catalog. They are about 60 pages each and the thing I really like about them is they are devoted to each individual platform respectively. You don't have to flip through a huge catalog to get to what you want.
They also have pictures of complete guns with the parts numbered on the picture. The corresponding parts are listed below with a short explanation of what it is and does. A nice feature for those like me who are considering an AR and get overwhelmed with all the "stuff" available. The 1911 catalog is set up the same.
I don't work for or with Brownells.