Shield Arms Mag Well, For GLOCK Gen 5 17/22/45, Aluminum Construction, Anodized Finish, Black G17-MAGWELL-BLK Speed up your reloads with the Shield Arms magwell for the Glock 17/22/45! Shield Arms slim-profile aluminum magwell for the Glock 17/22/45 is designed for smoother" faster reloads" and maximum concealability.