I see Busterswoodshop point and using the AR pistol as a car gun under some circumstances.
s4s4u said:
Another advantage to an AR "pistol" is that is legally a pistol so if you have a permit to carry.....
Here I can't agree. AFAIK there is no practical retention holster for these so open carry is out! (Too likely for someone to come along go "Dam I've always wanted one of those..." grab it and take off! ). Yes a sling could help, but it's going to be awkward (sit in a car anyone?). Also it's sure to upset the hoplophobes and they'll complain. BTW there are states, and some cities, including SC and Denver that prohibit open carry! Carrying one concealed is plain silly-unless you don't mind looking like a trench coat hero.