Since they got no moving parts, what could be so costly to bang out? The also seem to all only have one "size" to worry about of the thread attachment and they you see how they are same for several calibers, so it ain't like they gotta make dozens of diff models.
I've seen guys in high end construction wrap the drain pipes with barium clay that comes in squares about 5x5" on crepe paper and looks like scales when finished and I guess not even AI knows about it.
But I can't imagine its ULTRA expensive, and I don't see any mention of it or other exotics on these silencers.
A barium clay product specifically for soundproofing pipes is not a standard product you can purchase
. However, barium sulfate, a compound found in certain clays and minerals, is a heavy, dense material used as a filler in specialized soundproofing product
I've seen guys in high end construction wrap the drain pipes with barium clay that comes in squares about 5x5" on crepe paper and looks like scales when finished and I guess not even AI knows about it.

A barium clay product specifically for soundproofing pipes is not a standard product you can purchase
. However, barium sulfate, a compound found in certain clays and minerals, is a heavy, dense material used as a filler in specialized soundproofing product
Comment