Lone Wolf barrels offer match grade performance, more options, written life time warrantee and are economy priced. We DELIVER more bang for your buck! You can order any LWD barrel "blind marked". For more information click here. You can order any LWD barrel "black-oxided". For more information click here. You can order any LWD barrel or slide custom ported. For more information click here. ALL LONE WOLF BARRELS ARE COMPATIBLE WITH GENERATION 4 GLOCKS