TangoDown Vickers Tactical Grip Tool For Glock Gen 4, Black Color GGT-02 TangoDown is pleased to release the Vickers Tactical grip tool for Gen4 Glocks. The GGT-02 consists of 3 parts" a base insert and 2 tools. Simply snap the insert into the pistol frame cavity and select the tool you choose to carry. One is for use WITH the back straps" and one is for use WITHOUT.