The True North Concepts 4-Prong Flash Suppressor (4PS) is designed for military, law enforcement, and shooters who require superior flash reduction and compatibility with the industries best suppressor QD system, Dead Air's KeyMo Attachment System. The 4PS works seamlessly with all Dead Air's KeyMo suppressors and HUB compatible suppressors when using Dead Air's KeyMo Adapter (DA428) or KeyMo "S" Mount (DA429), this includes silencers from SilencerCo, YHM, CGS, Griffen Armament and Energetic Armament to name just a few. Developed in collaboration with Dead Air Silencers to ensure every 4PS has the correct critical OEM dimensions, this KeyMo-compatible muzzle device minimizes visual signature, preserving night vision and reducing detection in critical situations.