Is there a reason no one has designed a printed helical mag? Any material limitations or something? Or just not needed so far? : fosscad

At the risk of a detailed debate, helical feed has reliability problems, uses a lot of engineering to over come the swapping of magazines, and 50, 60, or 100 round magazines accomplish the same goal. As I recall, there was a time when some states viewed fixed magazines differently than detachable–so there might have been a legal reason behind the design. After antigunners went after the calicos, I think that advantage was erased (just writing from memory).

I like helical feed for the same reason that I like twelve cylinder, turbocharged engines–“because you can.” That’s maybe not the best motivation for a firearm design, but it would be cool if you make it happen.