Gun Builder is a free weapon building game in which players have to assemble a firearm. Drag different parts of the weapon to the middle of the screen and place them correctly. Every time you finish building a gun you will proceed to the shooting gallery. There you can test the weapon by shooting targets. Once you have tested it, a new weapon will be available for you to build. In the online game Gun Builder, players can also customize their guns and rifles. Test what would come out of an AK-47 grip, a 9mm frame and a 12 gauge barrel, for example. Set free your creativity and build the perfect, most powerful gun. Have fun.