Especially when shooting with a pistol type blaster, one seems to run out of darts very quickly before you can pick them up. This is a bit of a problem in an intense battle situation as there isn't really time to pick up darts without getting shot. This gave me the idea to make this holster so I could carry a few extra rounds with me to ue in case of such an emergency. Even though it only holds three darts, that should be enough for you to defend yourself while picking up darts. It is printed in two warts which are then assembled with CA glue or something like plastic cement.