The flash suppressor is just that, a flash suppressor, not a muzzle brake. Muzzle blast will be the same with it on or off, recoil will be the same with it on or off. The only difference is you *should* have less noticeable muzzle flash with it on. If you want less recoil, go with a muzzle brake. However, those also tend to increase flash, and increase muzzle blast directed back towards the shooter (but it usually is not too amplified to the shooter, just those who are next to you).