Recently I caught the Plum Polymer fever and I stumbled across this post whilst doing research on plum polymer and the various plum magazines. I know for a fact I have no hopes of ever seeing one in my possession within the near future, so I decided to use some of my (limited) CAD knowledge and a digital caliper to create a semi-true replica of the 5.45 version of the rare ribbed plum magazines. It's designed to work with a basic follower,spring, and base-plate. As it's just a prototype I really didn't design it to have any metal reinforcements but I wouldn't be opposed to adding them in the future if I would actually produce it. Also, I'm also looking for a company or individual to help me produce a single prototype mag to see if my design and specs all line up and check if the dang thing works and feeds right. 3D printing would be my method of choice for the prototype, preferably SLS or MJF. Please tell me what you think of it and if you have any tweaks!