3D Print Your Own High Capacity Gun Magazines Ari ⋅ DIY, How To, Technology ⋅ 3d, assault weapon, high capacity, magazines, printer ⋅ 5 comments Impending government assault weapon high capacity magazine ban got you down? No problem! Head on over to Defcad.org and download the files to print your own high capacity magazines at home on a 3D printer. More Ari Brockman: That is awesome! I wonder how ell they will hold up? Ping Jintao: I assume that would depend upon what type of filament you used . Zuzu Gates: That rocks!!! Jill Binoche: Next, print your own gun? Jon Mentor: Is this legal?