When it comes to muzzle devices, there is a lot of confusion between what makes one a flash hider and another a brake. To help cut through some of that is Joe Marler with Daniel Defense in the above video.
In short, flash hiders reduce the visual signature (i.e. the muzzle “flash”) while a brake (not break) is designed with the objective of reducing felt recoil, which in turn increases accuracy. For reference, most of DD’s guns, rifles, and pistols, come with a standard-length flash suppressor installed.
If you remain curious as to the science of how a brake works, check out the below.