That is how I made mine for my TalonP. Vented(factory) bushing and Delrin is what I used to make the insert that replaces the end cap. Aluminum tube with .063 wall and K type baffles. Aluminum end cap.
Dimensions: OD .870″ .003-.005″ smaller then inner wall diameter. Hole is .030″ over diameter of the pellet/bullet. 45 degree angled hole. OAl length is 1″. Can’t show a picture here as it is against the rules.