As above, has 1/2" unf fitting in it at the minute and comes with a 9/16" threaded part as well.
Its been on 2 rifles, total round count is 12!
Looking to move it on quite quick, they retail £199
£125 if collected (IP12 area)
£140 if sent (RFD)
end cap is purple if it makes any difference.
Obviously it's unmarked as it's practically brand new.
Link to their website below to see spec.