The Radical Defense KFM taper-lock flash hider is a RD in-house designed silencer mount.  It was made for an agency requirement to reduce flash and visual signature by 90% when compared to a standard A2 birdcage.  At the same time the footprint could not exceed a standard A2 birdcage.  The KFM is the smaller flash hider suppressor mount that was able to be designed while meeting all of the required specifications.