The HAD (Heat Abatement Device) Suppressor cover by Rifles Only is a two part cover which is a bonus. The inner core will take up to 3000 degrees sustained. The outer sleeve will take up to 2000 degrees and is interchangable so that you can change the cover to go with the environment in which you are in…or even whatever mood you are in. The outer sleeve will hold up to semi-auto fire, rapid fire, and full auto. We recommend that you do not get crazy on your Mag dumps though.