Has anyone ever heard of or experimented with machining a 30-degree taper on the shoulder of a pistol barrel and piston? Q and Sig do similar on some of their rifle barrels, and it’s said to prevent the suppressor from backing off. It would be great if it kept a pistol suppressor from backing off all the time. It more or less turns the bare muzzle into a taper mount (at least that’s how I conceptualize it).