What I'm about to say is purely hypothetical, and in no way should infer that I have this setup at all.. but -if- I were to have a shotgun, and -if- I wanted defense rounds for CQB/CQC.. I would definitely have a Benelli M4 loaded w/12 gauge flechettes. Laser sharpened steel darts tend to turn people into pincushions and rip gaping holes in critical mass.. and can stop a group of gang members rushing a door with 1 round, maybe 2... the only issue is the ability to over-penetrate, and you wouldn't want to explain to law enforcement in most countries why you have shells that are not 'legal' per their definition of shotgun shell either.. catch-22. At the end of the day though, I'd rather be tried by 12 than carried by 6. No tolerence, no mercy. Best summarized with a photo: