Abstract: A rescue tool for removably mounting onto a firearm. The rescue tool includes a shaft having one end formed for mounting onto a firearm. An insertion body is formed on a second end of said shaft of the tool. The insertion body is ideally formed in a shape that will aid emergency first-responders, law enforcement personnel and/or military personnel in entering buildings through entryways such as, for example, secured doors and windows. The insertion body of the rescue tool may be integrally formed onto the end of the tool or alternatively removably mounted onto the rescue tool. A user-actuated mechanism may be utilized to provide the user with the ability to adjust the length of the rescue tool, thus providing for ease in carrying the tool while simultaneously providing a longer lever arm when needed for added leverage in breaching buildings.