AR "pistols" are ultra retarded. The fuckin thing is already small and lightweight with a 16 inch barrel so making it the size of a subgun does very little other than turning 5.56 into an even louder .22 magnum by cutting half of its necessary barrel off. There is essentially no reason for a normal, non-doorkicker to run a "pistol" or SBR.
Yes, I'm sure the far-left capital "L" Libertarian party will do a great job of protecting our rights instead of capitulating to communists...