Thie 3Coil Puna is a keychain multi-tool for the gun enthusiast. Similar to the AR-15 platform, the tool goes together by combining the upper and lower receivers. The upper includes a replaceable No. 11 scalpel blade and a wrench for working on the Puna. The lower includes a bottle cap lifter, and exchangeable screw driver bits. All of this put together looks just like your favorite rifle!