Gun's all wrong for in-home defense.
Too easy to shoot the wrong person, ranges in-home are too short. What you need is a good shortsword or wakizashi - something with a long enough blade to make that piddly little bowie knife have performance anxiety, but not so long that it gets caught on walls or doorways.
Now, if somebody is out on the front lawn...
"Here at Ortillery Command we have at our disposal hundred megawatt laser beams, mach 20 titanium rods and guided thermonuclear bombs. Some people say we think that we're God. We're not God. We just borrowed his 'SMITE' button for our fire control system."