Yeah going after printing and/or filament is dumb. I’m I guess what some would call a “gun guy”. 3D printing in this space is less practical and more just for fun.

You can use a metal coat hanger to full auto an AR. A printed suppressor is going to be so weak it’ll probably break on first use. Oil filters work tho. If you want to illegal things the better way to do most often doesnt involve printing.