This is the Triton 42 II over barrel sound moderator made in Sweden.
Thread size M15x1. Max cal .267 (came off my 6.5x55). Round count less than 100.
Comes boxed and with 3 years warranty remaining.
RFD to RFD or face to face in South Wiltshire.
RRP is £275
£125 ONO to a deserving home.
Images available if you are interested