Tuning anyone have this adaptor to sell?

[leo5111]

1/2x20 is size guy who has it on his sparrow, im talking about the silver adaptor

 

[leo5111]

if anyone has a AEA hp standard or hp sparrow can you measure the inner/outer diameter of the shroud?

 

[leo5111]

anyone wondering its this i just ordered guy said shroud is same size https://www.aresairgunstactical.com/collections/ares-tac-products/products/ares-357-cal-suppressor-end-cap-adapter-for-aea-terminator