Emperor/Ronin v3 6.26 inch Extender M18X1 Thread
Is the 10.5 inch Emperor v3 still too loud for you? If so add this 6.25 inch expansion chamber to the rear of the Emperor to make it even quieter. This increases the air volume that gets captured inside the suppressor. Works with the latest version of the Ronin as well. If it has the grooves in the front cap, it's the latest model.