Fortis' Rapid Engagement Device" or better known as the Fortis RED™" is a brake that stays true to Fortis' brand. They wanted to develop" engineer" and design a military grade accessory that not only functions great" but looks great also. Tested and evaluated by people in the military and law enforcement community - then put to the test by members of the 3 gun community" Fortis came up with this design. Tested under harsh full auto conditions" the RED™ doesn't disappoint. Now control shield compatible! Keep your speed and accuracy up. Put more down range and on target. Try out the Fortis RED™