No idea how this will play out, but it's an approach I've thought about for years. Gun violence is considered by many to be a public health issue; cigarette companies are constrained in how and to whom they advertise. Should gun manufacturers be exempt? What constitutes an incitement to violence? What are a manufacturer's responsibilities vis a vis recommended use of a product, either explicit or implied?
No interest in rehashing the pro v con gun debate, but the broader legal questions raised by this approach are pretty interesting.