- From 2013, we have received a few weapons every year, now we are starting to receive maybe five to six cases a year, says Mikael Högfors at the National Forensic Center (NFC), to the radio.

In the most recent case of this type that has been in court, a man in Trollhättan who manufactured this type of weapon was sentenced to five years in prison for, among other things, weapons offenses and serious drug offences.

According to the European police agency Europol, the rise of 3D printed weapons is a present and future threat.

Mikael Högfors is worried about the development.

- If you reduce the smuggling of illegal weapons, the demand will still remain.

All the plastic printed weapons we see today have been made with the intention of being used in criminal contexts, he says.

Join SVT's reporter Carl Fridh Kleberg to the USA where there are similar problems with 3D printed weapons.

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Here, the weapons enthusiast shows SVT's foreign reporter Carl Fridh Kleberg how to 3D print a weapon.

Photographer: Markus Ljungholm