M10/11 9mm To M10 .45 Acp Adapter (3/4x10 To 7/8x9)

Our thread adapters are composed of alloy and iron-chromium-nickel steel. They are corrosion resistant and finished in black oxide. Inside thread of 3/4-10 to an outside of 7/8-9 to fit a Mac-10 .45 acp suppressor or other component. length is 3.25".