I was having a conversation with my local gunsmith who had worked as an Army armorer, and he made the claim that a compensator can affect your barrel or bolt life over time because it creates a vertical force on your barrel as the bolt is unlocking and cycling, and that creates uneven stresses on the bolt from the top lugs to the bottom lugs.

I vaguely remember that there was a report where heavily pulling on a vertical foregrip affects bolt life for the same reason, that it causes a bending force on the barrel that ends up putting more pressure on some bolt lugs than others.

Am I misremembering this? Is there any veracity to these claims?