I have for sale a mint one week old Andrew Hugget barrel shroud for a Daystate AirWolf, these are a straight 2 minute swap but are so much better than the Datstate original, just go online and see the reviews. They are both more accurate and quieter than anything on the market and are suitable for both standard 12ft/lb or FAC. They are expensive but you get what you pay for, i paid 150 last week for it but i am selling the rifle so will sell for 120+5 for postage and its as new.