Remixed from https://www.thingiverse.com/thing:2491889

I redesigned the magazine in OnShape to make it print a bit better by having the model sit flat on the build plate rather than having a section above it. It uses the same dimensions as the original model. I made the cylinders sit flat and removed the chamfers where they attached to the big circle. The redesign was mainly to get rid of the need for supports so I could print them in TPU for better flex, so they wouldn't break if dropped, and for better grip on the bbs. These have been battle tested and worked pretty well, but make sure to use an easy-to-spot color for them in case they are dropped.