Sorry I can't help with the question; my pistol doesn't have anywhere near the amount of adaptors as shown. I was given mine for spares; it's a single shot Aeron according to the box; dropped and had a shattered rearsight unit, which I've re made in steel, my cry for help is does anyone have a manual or at least a trigger adjusting instruction sheet maybe. ?? any help greatly appreciated. I stopped pistol shooting due an eye condition, sold my P44; condition now sorted thanks to JAG laser surgery; so needing a pistol I figured I'd repair this one.