ABC News’ Devin Dwyer reports on "ghost guns" -- untraceable weapons made from do-it-yourself kits or 3D printers -- that are increasingly finding their way into the hands of teens and felons.

Weller makes yet another appearance on this list, this time with the Weller 260W & 200W soldering gun kit. Unlike a standard soldering iron, this soldering gun is intended for heavy-duty needs.

In a case that did not directly address the right to bear arms, the court last month upheld a Biden administration bid to regulate “ghost gun” kits that can be easily assembled to make firearms.