What is the firearm blue book?

The firearm blue book is a source that accurately lists the values of different guns. It helps readers find the worth of a gun if they are looking to sell or buy. This source is more commonly known as the "Blue Book of Gun Values," and is found online.

Originally, the NRA graded firearms with adjectives like "excellent" and "fair." Dealers now shy away from these terms because there is a lot of variance in the older adjectives. Most dealers now grade guns based on the percentage of original factory finishes that remain. A gun rated 100 percent is equivalent to new, 98-99 percent is considered mint condition, and 95-99 percent is excellent condition.