Hi all, here's a quick ammo case I came up with. No additional hardware is required, this uses printed pins with tight clearances. Holds 100 rounds, minimizes rattling and is pretty rugged. The cone shaped things are only required if you want to stack cases. If you're just printing one or not stacking, no need for them. 

The latch is super satisfying!

Assembly: Pretty straight forward. The short pins are hinges for the back, the long pins are hinges for the front.

IMPORTANT: If your pins are too tight, please rescale by .5% at a time until they feel good. They're meant to be tight, but don't break anything! Or take some sandpaper/knife and scrap away until there is a good fit.