i have not seen the benefit of a SBR. Pack a pistol and a carbine. Fortunately, the **** ain’t that bad around here. Some nice little carbines or bull pups.
For me, it was when I tried to navigate the hallways in my house and wanted more than a handgun.
And if you want to keep a firearm in the car, that short barrel is nice, and I don't have to learn a new gun