Polymer drift punch guide jig Guide jig Lower receiver wrench Steel punch AR15 Bolt Catch Tools help with the installation of the Bolt Catch Lever onto an AR lower receiver. Makes the process of installing the roll pin for the bolt catch a super easy job. Polymer drift punch guide jig helps with guiding the included steel punch onto the roll pin. Guide jig helps prevent the marring of the receiver finish. Allows the gunsmith to have both hands free to focus on drifting the roll pin into place. Includes polymer drift punch guide jig and steel punch.