What defines what is an ordinance or an arm?What about grenade launchers, AK-47's or anti aircraft guns... Do you believe that these should be deemed dangerous or should all of these should be legally sold to citizens?As noted: If a class of firearm is in common use, it is not "unusual".Ok, that is fair... So we have standard to determine "common use" based on sales and market saturation etc... Now, is it fair to say that we should have standards and a process for defining weapons as "dangerous and unusual"?Agree or not, it is the law.
I suppose you'd look at yearly sales, saturation of market, availability of parts and accessories, coverage by industry publications, etc
The AR15 platform is the most popular, best selling rifle in the US, and so its 'common use" isn't a question.
If it is in common use, it is not unusual.
"Dangerous" refers to a danger outside that inherent to a firearm - this would cover mustard gas, nuclear weapons, etc.
Wouldn't mustard gas, nuclear weapons, grenade launchers and anti-aircraft guns be considered ordinance, not arms?
Ordinance is cannon or artillery.
Arms are personal weapons with their equipment, ammunition, etc.