ULTIMATE® anti-heat selector plates for MP5 series. Made from a heat resisting compound. All electrical contact surfaces have a high-quality plating to ensure low inner resistance in ohm (Ω). Any form of upgrade on an AEG places great demands on the electrical components. To get the most out of your upgrade we recommend changing the electric components at the same time. When making powerful upgrades, it is a must that you change the electrical components.