Can I ask why? Why would anyone in their home over possibly need an assault rifle?
Do some research about assault weapons, how they're defined, and how "effective" the original assault weapons ban was over 10 years (hint: it did virtually nothing). To ban something, you have to define exactly what it is. And what makes an "assault" weapon, by definition, is basically just a bunch of small cosmetic differences that people associate as being scary or too military-like. But in practical use, they're pretty much identical to other semi-auto guns that don't have a flash hider, adjustable stock, etc. Did the assault weapons ban stop the Columbine shooters? Did it stop the Virginia Tech shooter? In both cases, the shooters used gun that were legal under the ban (including magazine capacity). Their solution was to just use more magazines.
Also, you're saying it's okay to own a handgun, which is easily concealed and used in roughly 90% of all gun crimes, but you draw the line at something owned mainly by enthusiasts/target shooters. You can't enact legislation just for an emotional win. You need legislation that actually works.