556 100-round case with lid

thingiverse

This is a larger version of the standard 556 20-round case, designed to hold 100 rounds instead. So far, it has not been manufactured or tested yet. Anyone who downloads and prints this file is encouraged to share their results with me - I'm planning to print and test one soon. I've managed to successfully print a copy of this design, but the lid fits poorly. However, I did encounter an issue during printing where my sides turned out as individual sheets rather than solid walls of plastic. Luckily, it still holds its ammo just fine. The real challenge is figuring out why the 100-round case's walls didn't turn out solid like they should have - in contrast, the standard 20-round cases had solid walls all around. If you do decide to print this out for yourself, please let me know how your copy turned out!