Drum Springs

These springs are sourced from PotatoFeederNerf and are designed specifically for many of the 3D printed nerf magazines that are used within the community. These include some of the popular Drum/Thanhlon/Gecko magazines.
 
At full extension they will reliably feed 45 darts in Thanhlon mags.
 
With a little tickling, these springs will serve as replacements for the NERF drum mags, which tend to wear out and jam over time. Be aware that these springs are a lot stonger than the stock drum springs, so care will need to be taken when installing them.