I have posted this before; a friend and I were p*ssing around off a logging road with short-ish barrel SGs'
I had my S&W 3000 with a 20 inch barrel and factory wood stock and he had a defender with pistol grip only. We set up some balloons in the trees and made a little assault course.
I did it in about 40 seconds and he did it in about 3 1/2 minutes, including the two times he had to run back to the truck for more ammo. He couldn't hit anything with PGO.
If you want to go pistol grip only, practice is gonna be important.