Intended for use during training- for those who loose magazines and weapons this item is given until end of day. Or this can be used for uplifting moral when carying weapon without real magazine (to be used as dust protection). Can be printed standing up with supports featuring 10 degree overhang treshold, but I cut them in half and glue together, I think it is better for durability and no supports needed, I have not tried printing upright, so I recommend taking time and gluing together.