This is a remix of the sure.t mag- nerf half dart/talon magazine from t4obrien and bottom and spring for sure.t mag- nerf half dart/talon magazine from Nick__Furry.
Print at 100 % speed on A1 mini. It has good adhesion with the brims added.
The 3d printed spring costs ~15-20 cents to make compared to the ~2 dollar plus shipping drum spring but brings the capacity from 12 darts to 8 darts.
The bottom has a tight enough tolerance to fit in without glue or screws and can withstand the spring tension. You may need a hammer to bop it in.