Ever since the landmark ruling on 3D-printed firearms, outrage and moral panic have surrounded so-called “ghost guns.” Whether you’re a proponent of Second Amendment freedoms or just doing opponent research, it’s important to have the facts about what a ghost gun is and what it is not.

It’s also important to know other related terms in the world of firearms – like how is a ghost gun different from a 3D-printed gun? And what is an 80-percent lower? This guide will answer all of your ghost gun questions, and will separate fact from fiction surrounding this polarizing topic.

What Is a Ghost Gun?

Put simply, a “ghost gun” is a catchall term for any firearm without a serial number. There are a variety of ways a person can come to own a firearm without a serial number that do not involve breaking federal law, which generally prohibits the removal of serial numbers but not, however, the ownership of a firearm without a serial number.

It’s not a loophole in the law. The law is specifically written to exclude professional gunsmiths and hobbyists. Even if you own a ghost gun – that you must make yourself – you’re never allowed to sell or transfer it without getting a serial number. In fact, there are a number of procedures in place allowing for amateur gunsmiths to get a serial number for their homemade firearms for precisely this purpose.

Continue reading 3D-Printed Firearms and Defense Distributed: A Guide to Understanding “Ghost Guns” at Ammo.com.