M4 to MP5 mag converter

This design was sort of made in tinkercad, but refined outside the print, I had to cut, sand, and place wood spacers to ensure a perfect fit. You will need to do this to your M4/M16 or MXC if you are wanting to make this fit wonderfully, it will be glued which mine had been super glued in but was clamped and let sit for 5 hours against the right wall of the mag well (THAT IS THE BEST PLACE TO GLUE IT TO). Other than that I can print another and I can make a vid on it if you would like! I used a