Comment by paulddraper

I'd describe it as less "borderline fashion" (which any hobby has) more as legal caprice.

Historical examples:

* The Firearm Owners Protection Act banned machineguns manufactured before 1986.

* The Federal Assault Weapons Ban banned certain semi-automatic weapons excluding those manufactured before 1994.

Firearm hobbyists need decade-plus forward thinking predictions. What's today legal is a felony tomorrow, unless steps are taken now.

This makes it a volatile guessing game, even more than other hazardous hobbies (cars, aircraft, martial arts, motorcycles, etc.).