1. Handguns are harder to employ accurately than a handgun
2. Handguns are harder to employ accurately while simultaneously operating a white light than a carbine
3. A shotgun is not nearly as easy for a novice to operate as a 5.56 carbine is.
4. Other than Army LtGen’s and CNN reporters, few folks have an issue running a 5.56 AR accurately at close range.
Interesting, but 180 degrees from my experience and the experience of those I know.
Home defense involves tight quarters. Maneuvering an AR or shotty is not easy in hallways, stairs and doorways found in US homes.