A printable BoomCo clip that uses brass barrels and allows for an adjustable capacity.
This is untested and may not work as intended!
This needs brass barrels in order to work. I have included the brass size and lengths below in both metric and inches.
Metric:
Needs 53mm of 11.11mm brass per barrel.
If you print a 6-dart clip, (one of each piece) you will need a little over 0.3 meters of 11.11mm brass tubing.
Inches:
Needs 2" of 7/16" brass per barrel.
If you print a 6-dart clip, (one of each piece) you will need 1 foot of 7/16" brass tubing.