Gun Values by Gun Digest- blue book of gun values 2020 ,Easily look up new and used firearm values. Gun Values by Gun Digest brings you the authority of our annual gun pricing guide, The Standard Catalog of Firearms, in a simple online package. Search or browse models and manufacturer info for free.Top 10 Gun Books of 2020 | Video Review28/1/2020· 1. Blue Book of Gun Values. With roughly 30,000 weapon descriptions and 180,000 prices, the Blue Book of Gun Values (about $30) is one of the most comprehensive guides available. This recent 40th-anniversary edition includes all of the new makes and models for 2019 and expanded serialization charts. 2.