Are you going to be offering a retrofit for the suppressor body if I want to send you my kestrel 556?
Semperfi will have to answer that for sure, but I don't think you could replace the tube as part of that is the registered portion of the suppressor. Maybe you could replace the non-serialized portion... which I guess would still offer some decent weight reduction, but I don't know what sort of issues you'd have with threading those two different metals together (maybe no problems at all, I don't really know).