There are totally plastic designs for small calibers intended to shoot only a few times. Then there's stuff like the FGC-9, with it's home made ECM barrel. Whi

There are totally plastic designs for small calibers intended to shoot only a few times. Then there's stuff like the FGC-9, with it's home made ECM barrel. Which was designed primarily for areas like europe where other firearm precursor parts are hard to get a hold of. https://www.youtube.com/watch?v=Q1Z9DpoGW7Y https://www.youtube.com/watch?v=Q1Z9DpoGW7Y