As reported previously the Maxim 50 by Silencerco is a suppressed muzzle loader. No need for FFL transfer. Here is an awesome video put out by Silencerco

https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2Fsilencerco%2Fvideos%2F1525513250829920%2F&show_text=0&width=560