Shotgun at close range across the bedroom nothing beats it. Stretch that distance out to 7yds and the pattern is spread and not target specific enough. The subgun can easily do multiple hits on full auto from point blank to 50yds. Past that the selector should be put on semi auto.
Those who say a subgun climbs just don't know how to handle a subgun, I am not taking about a machine pistol with a wobbly stock like the MAC but a subgun.
http://myweb.cableone.net/uziforme/m16-9mm.wmv