Holds 5 12 Short Dart Harmony Clips for @BruceLeedleLe_328938's Harmony Blaster. 

Requires four constant-force drum springs (e.g., these: https://www.blaster-time.eu/shop/foam-focus-constant-force-drum-spring/).

Assembly

1. Insert the hook ends of the springs into the cutouts in the body.

2. Insert the pusher from the top and use it to push the springs down to the bottom.

3. Seat the drum ends of the springs into the cutouts on the pusher.

4. Slowly release the pusher so the springs pull it back to the top.

5. Apply a small amount of glue and close the body using the two lids.

Inspired by: https://www.printables.com/model/142900-suret-mag-nerf-half-darttalon-magazine

Improvements / Notes

• Clips can be removed smoothly, but insertion is somewhat tricky: the spring hooks are not covered or recessed and may catch on a clip during insertion.

• The lids could be redesigned to latch onto the body, eliminating the need for glue.