You don't have to keep an "inventory" of your C&R guns. Any C&R guns you already owned before you got the license aren't part of the C&R process unless you sell them while you hold a C&R license.
You do have to keep a "bound book" listing all C&R transactions you make while your C&R license is in effect. This includes all acquisitions (purchases) or dispositions (sales) of C&R guns. If you sell a C&R gun you had before you got the license, you record the sale.
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Last edited by leadchucker; January 6, 2013 at 08:02 PM.