If you have a bounce, and a fire backwards stock, when you have you back against a wall, you'll fire twice as many (8 total in your case, unless you have shotgun shells) bullets forward.
On hard difficulty setting. 4x barrel, reversal stock, automatic trigger with bees, bounce grip, bounce ammo, shooting while reloading. With reversal stock and bounce, I'm shooting 8 bullets forward at a time with a wall behind me.
