The RMP Mag spring
No more dealing with to heavy drum springs in your small 3d printed magazines. The RMP mag spring was made especially for 3d printed magazines that hold between eight and 12 short darts. We user it for our Gecko magazines and our Scarlett magazines, but the would work great in any magazine using the same or similar geometry.
The springs come with a little loop on top so you can screw them into your follower, similar to the worker springs.
If you want to use them for a short, six dart magazine I recommend cutting them down a little.
Also I do not recommend using those for magazine designs bigger than 12 darts capacity as they might be to short. (this is not tested as don’t have any magazines like that)