Hi mate i have one on mine made by nick murphy which cost £45 and is fantastic but i dont have any contact details for him unless nick himself or anyone on here can PM you his phone number, but they're a quality bit of kit
ATB Mike D
Is that the one I got from you. Just dug it out, has a shoulder on the inside and 2 grub screws.
Neil has just made an air stripper for my prosport. I did ask him what else he makes - ie target turrets and never got a response.... think I may drop him a pm over on the AAOC now. Have emailed Dave @ rowan today so will wait and see what he comes back with