If you are looking for a can, look watch this
https://www.youtube.com/watch?v=OznQ-Rb1CC8
John use to work for ACC, now for Sig. If you know silencers, then you should know who he is. The genius troll knows cans! a Sig can is hard to beat.
No need for an outer extra tube, new 360 welding process, 20% more internal volume. Better, quieter, cheaper, best all around can out there!