How many legally owned guns in US?

No way to answer your question. In the US, there is no requirement under Federal law to register firearms, so no records of how many guns total, It is estimated that at least 25% of US households have at least one firearm.
No way to answer your question. In the US, there is no requirement under Federal law to register firearms, so no records of how many guns total, It is estimated that at least 25% of US households have at least one firearm.