Recover Tactical MG9-01: We decided it was best to stock up on their attachments after the extremely popular release of RT\'s 20/20 stabilizer kit for Glock\'s. This is the angled magazine holder that can be attached to your 20/20 via Picatinny rail in front of the trigger guard. This allows you to carry an extra magazine on hand for extremely fast reloads. In addition, it is capable of retaining fully loaded 9mm, SW40, and .357 Sig Glock Magazines. This is a must-have for your 20/20 Stabilizer! Note: This is the mag holder only. Does not come with a magazine.