They touch on it for the muzzle device shroud, but not the baffles themselves

Anyone tried PPS baffles over PA6? The rigidity of PPS has benefits and drawbacks, in that it will dampen the forces of expanding gas less, which could make for a quantifiable reduction in sound suppression, it has lower layer adhesion, but higher temperature resistance. If you go with glass filled, it can also have strong insulative properties in addition to the flame retardency. It has also been shown to have nearly no creep under loads below yield, meaning that as long as it’s able to stand the impact, it might genuinely have better durability than nylon.