demonstrating the successful firing of a gun that has zero store bought parts. it has one store bought part. they use a nail as a firing pin. so just a regular old nail that you can buy at a hardware store, but other than that, the whole thing is 3-d printed. it is all plastic. however, thanks to this guy, plastic guns are illegal in the united states. ronald reagan in 1988 signed into law something called the undetectable firearms act. it bans any gun in the united states that doesn't set off a metal detector. for obvious reasons. this plastic gun could functionally be made entirely of plastic, except for that one little nail, which might not set off a metal detector because it is very small. just to comply with ronald reagan's plastic gun ban from 1988, the publicity stunt guys who made this weapon, inserted a six ounce cube of nonfunctional steel into the body of the gun, which, of course, makes it detectible with a metal detector. so the publicity stunt guys have put that piece of metal into the gun in order to comply with the law. but functionally the metal does not have to be there. that piece of steel they have dropped into the gun is nonfunctional. anybody else who 3-d prints the gun based on their