Everyones favorite, the MP5, but nearly entirely printable
The MP22 and its variants are nearly entirely 3d printed clones of H&K’s MP5. The documentation is thorough, and there are a ton of variants available and included in the pack. This is an advanced build, with nearly 50 hard parts you will need to buy in addition to the printed plastic pieces. Fortunately, it is well documented, with an 18 page full color PDF that is very detailed.